diff --git a/java-texttospeech/README.md b/java-texttospeech/README.md
index 107b858c1805..6562f4943108 100644
--- a/java-texttospeech/README.md
+++ b/java-texttospeech/README.md
@@ -195,7 +195,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/google-cloud-java/java11.html
 [stability-image]: https://img.shields.io/badge/stability-stable-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-texttospeech.svg
-[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-texttospeech/2.31.0
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-texttospeech/2.33.0
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
 [auth-scopes]: https://developers.google.com/identity/protocols/oauth2/scopes
 [predefined-iam-roles]: https://cloud.google.com/iam/docs/understanding-roles#predefined_roles
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
index ee46736034ee..4a491033c5f1 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
@@ -16,6 +16,7 @@
 
 package com.google.cloud.texttospeech.v1.stub;
 
+import com.google.api.HttpRule;
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.core.BackgroundResource;
@@ -35,6 +36,7 @@
 import com.google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata;
 import com.google.cloud.texttospeech.v1.SynthesizeLongAudioRequest;
 import com.google.cloud.texttospeech.v1.SynthesizeLongAudioResponse;
+import com.google.common.collect.ImmutableMap;
 import com.google.longrunning.Operation;
 import com.google.protobuf.TypeRegistry;
 import java.io.IOException;
@@ -71,7 +73,7 @@ public class HttpJsonTextToSpeechLongAudioSynthesizeStub
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<SynthesizeLongAudioRequest>newBuilder()
                       .setPath(
-                          "/v1/{parent=projects/*/locations/*/voices/*}:SynthesizeLongAudio",
+                          "/v1/{parent=projects/*/locations/*}:synthesizeLongAudio",
                           request -> {
                             Map<String, String> fields = new HashMap<>();
                             ProtoRestSerializer<SynthesizeLongAudioRequest> serializer =
@@ -154,7 +156,22 @@ protected HttpJsonTextToSpeechLongAudioSynthesizeStub(
       throws IOException {
     this.callableFactory = callableFactory;
     this.httpJsonOperationsStub =
-        HttpJsonOperationsStub.create(clientContext, callableFactory, typeRegistry);
+        HttpJsonOperationsStub.create(
+            clientContext,
+            callableFactory,
+            typeRegistry,
+            ImmutableMap.<String, HttpRule>builder()
+                .put(
+                    "google.longrunning.Operations.GetOperation",
+                    HttpRule.newBuilder()
+                        .setGet("/v1/{name=projects/*/locations/*/operations/*}")
+                        .build())
+                .put(
+                    "google.longrunning.Operations.ListOperations",
+                    HttpRule.newBuilder()
+                        .setGet("/v1/{name=projects/*/locations/*}/operations")
+                        .build())
+                .build());
 
     HttpJsonCallSettings<SynthesizeLongAudioRequest, Operation>
         synthesizeLongAudioTransportSettings =
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
index 51fbd1c1f61c..9e96eef92b42 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
@@ -16,6 +16,7 @@
 
 package com.google.cloud.texttospeech.v1beta1.stub;
 
+import com.google.api.HttpRule;
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.core.BackgroundResource;
@@ -35,6 +36,7 @@
 import com.google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata;
 import com.google.cloud.texttospeech.v1beta1.SynthesizeLongAudioRequest;
 import com.google.cloud.texttospeech.v1beta1.SynthesizeLongAudioResponse;
+import com.google.common.collect.ImmutableMap;
 import com.google.longrunning.Operation;
 import com.google.protobuf.TypeRegistry;
 import java.io.IOException;
@@ -71,7 +73,7 @@ public class HttpJsonTextToSpeechLongAudioSynthesizeStub
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<SynthesizeLongAudioRequest>newBuilder()
                       .setPath(
-                          "/v1beta1/{parent=projects/*/locations/*/voices/*}:SynthesizeLongAudio",
+                          "/v1beta1/{parent=projects/*/locations/*}:synthesizeLongAudio",
                           request -> {
                             Map<String, String> fields = new HashMap<>();
                             ProtoRestSerializer<SynthesizeLongAudioRequest> serializer =
@@ -154,7 +156,22 @@ protected HttpJsonTextToSpeechLongAudioSynthesizeStub(
       throws IOException {
     this.callableFactory = callableFactory;
     this.httpJsonOperationsStub =
-        HttpJsonOperationsStub.create(clientContext, callableFactory, typeRegistry);
+        HttpJsonOperationsStub.create(
+            clientContext,
+            callableFactory,
+            typeRegistry,
+            ImmutableMap.<String, HttpRule>builder()
+                .put(
+                    "google.longrunning.Operations.GetOperation",
+                    HttpRule.newBuilder()
+                        .setGet("/v1beta1/{name=projects/*/locations/*/operations/*}")
+                        .build())
+                .put(
+                    "google.longrunning.Operations.ListOperations",
+                    HttpRule.newBuilder()
+                        .setGet("/v1beta1/{name=projects/*/locations/*}/operations")
+                        .build())
+                .build());
 
     HttpJsonCallSettings<SynthesizeLongAudioRequest, Operation>
         synthesizeLongAudioTransportSettings =
diff --git a/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java b/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java
index dfb4deec7c52..1d72c2fc0196 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java
@@ -86,7 +86,7 @@ public void synthesizeLongAudioTest() throws Exception {
 
     SynthesizeLongAudioRequest request =
         SynthesizeLongAudioRequest.newBuilder()
-            .setParent("projects/project-5698/locations/location-5698/voices/voice-5698")
+            .setParent("projects/project-5833/locations/location-5833")
             .setInput(SynthesisInput.newBuilder().build())
             .setAudioConfig(AudioConfig.newBuilder().build())
             .setOutputGcsUri("outputGcsUri-489598154")
@@ -121,7 +121,7 @@ public void synthesizeLongAudioExceptionTest() throws Exception {
     try {
       SynthesizeLongAudioRequest request =
           SynthesizeLongAudioRequest.newBuilder()
-              .setParent("projects/project-5698/locations/location-5698/voices/voice-5698")
+              .setParent("projects/project-5833/locations/location-5833")
               .setInput(SynthesisInput.newBuilder().build())
               .setAudioConfig(AudioConfig.newBuilder().build())
               .setOutputGcsUri("outputGcsUri-489598154")
diff --git a/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java b/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java
index 3f9003b117a1..5643e144e7fb 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/test/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClientHttpJsonTest.java
@@ -86,7 +86,7 @@ public void synthesizeLongAudioTest() throws Exception {
 
     SynthesizeLongAudioRequest request =
         SynthesizeLongAudioRequest.newBuilder()
-            .setParent("projects/project-5698/locations/location-5698/voices/voice-5698")
+            .setParent("projects/project-5833/locations/location-5833")
             .setInput(SynthesisInput.newBuilder().build())
             .setAudioConfig(AudioConfig.newBuilder().build())
             .setOutputGcsUri("outputGcsUri-489598154")
@@ -121,7 +121,7 @@ public void synthesizeLongAudioExceptionTest() throws Exception {
     try {
       SynthesizeLongAudioRequest request =
           SynthesizeLongAudioRequest.newBuilder()
-              .setParent("projects/project-5698/locations/location-5698/voices/voice-5698")
+              .setParent("projects/project-5833/locations/location-5833")
               .setInput(SynthesisInput.newBuilder().build())
               .setAudioConfig(AudioConfig.newBuilder().build())
               .setOutputGcsUri("outputGcsUri-489598154")
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParams.java b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParams.java
index f85815e6321e..d01df719b72e 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParams.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParams.java
@@ -67,9 +67,8 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * The usage of the synthesized audio. You must report your honest and
-   * correct usage of the service as it's regulated by contract and will cause
-   * significant difference in billing.
+   * Deprecated. The usage of the synthesized audio. Usage does not affect
+   * billing.
    * </pre>
    *
    * Protobuf enum {@code google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage}
@@ -291,16 +290,19 @@ public com.google.protobuf.ByteString getModelBytes() {
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+   *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
    * @return The enum numeric value on the wire for reportedUsage.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public int getReportedUsageValue() {
     return reportedUsage_;
   }
@@ -308,16 +310,19 @@ public int getReportedUsageValue() {
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+   *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
    * @return The reportedUsage.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage getReportedUsage() {
     com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage result =
         com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage.forNumber(reportedUsage_);
@@ -817,16 +822,19 @@ public Builder setModelBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+     *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
      * @return The enum numeric value on the wire for reportedUsage.
      */
     @java.lang.Override
+    @java.lang.Deprecated
     public int getReportedUsageValue() {
       return reportedUsage_;
     }
@@ -834,16 +842,19 @@ public int getReportedUsageValue() {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+     *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
      * @param value The enum numeric value on the wire for reportedUsage to set.
      * @return This builder for chaining.
      */
+    @java.lang.Deprecated
     public Builder setReportedUsageValue(int value) {
       reportedUsage_ = value;
       bitField0_ |= 0x00000002;
@@ -854,16 +865,19 @@ public Builder setReportedUsageValue(int value) {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+     *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
      * @return The reportedUsage.
      */
     @java.lang.Override
+    @java.lang.Deprecated
     public com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage getReportedUsage() {
       com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage result =
           com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage.forNumber(
@@ -876,16 +890,19 @@ public com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage getRepor
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+     *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
      * @param value The reportedUsage to set.
      * @return This builder for chaining.
      */
+    @java.lang.Deprecated
     public Builder setReportedUsage(
         com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage value) {
       if (value == null) {
@@ -900,15 +917,18 @@ public Builder setReportedUsage(
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+     *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
      * @return This builder for chaining.
      */
+    @java.lang.Deprecated
     public Builder clearReportedUsage() {
       bitField0_ = (bitField0_ & ~0x00000002);
       reportedUsage_ = 0;
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParamsOrBuilder.java b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParamsOrBuilder.java
index 5c74fe650cf3..87006af53584 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParamsOrBuilder.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomVoiceParamsOrBuilder.java
@@ -56,28 +56,34 @@ public interface CustomVoiceParamsOrBuilder
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+   *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
    * @return The enum numeric value on the wire for reportedUsage.
    */
+  @java.lang.Deprecated
   int getReportedUsageValue();
   /**
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1.CustomVoiceParams.reported_usage is deprecated. See
+   *     google/cloud/texttospeech/v1/cloud_tts.proto;l=291
    * @return The reportedUsage.
    */
+  @java.lang.Deprecated
   com.google.cloud.texttospeech.v1.CustomVoiceParams.ReportedUsage getReportedUsage();
 }
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadata.java b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadata.java
index ec19b58c29c7..5ee06d3f5176 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadata.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadata.java
@@ -112,14 +112,17 @@ public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1/cloud_tts_lrs.proto;l=86
    * @return Whether the lastUpdateTime field is set.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public boolean hasLastUpdateTime() {
     return lastUpdateTime_ != null;
   }
@@ -127,14 +130,17 @@ public boolean hasLastUpdateTime() {
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1/cloud_tts_lrs.proto;l=86
    * @return The lastUpdateTime.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public com.google.protobuf.Timestamp getLastUpdateTime() {
     return lastUpdateTime_ == null
         ? com.google.protobuf.Timestamp.getDefaultInstance()
@@ -144,12 +150,13 @@ public com.google.protobuf.Timestamp getLastUpdateTime() {
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder() {
     return lastUpdateTime_ == null
         ? com.google.protobuf.Timestamp.getDefaultInstance()
@@ -774,13 +781,16 @@ public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      *
+     * @deprecated google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata.last_update_time is
+     *     deprecated. See google/cloud/texttospeech/v1/cloud_tts_lrs.proto;l=86
      * @return Whether the lastUpdateTime field is set.
      */
+    @java.lang.Deprecated
     public boolean hasLastUpdateTime() {
       return ((bitField0_ & 0x00000002) != 0);
     }
@@ -788,13 +798,16 @@ public boolean hasLastUpdateTime() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      *
+     * @deprecated google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata.last_update_time is
+     *     deprecated. See google/cloud/texttospeech/v1/cloud_tts_lrs.proto;l=86
      * @return The lastUpdateTime.
      */
+    @java.lang.Deprecated
     public com.google.protobuf.Timestamp getLastUpdateTime() {
       if (lastUpdateTimeBuilder_ == null) {
         return lastUpdateTime_ == null
@@ -808,11 +821,12 @@ public com.google.protobuf.Timestamp getLastUpdateTime() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder setLastUpdateTime(com.google.protobuf.Timestamp value) {
       if (lastUpdateTimeBuilder_ == null) {
         if (value == null) {
@@ -830,11 +844,12 @@ public Builder setLastUpdateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder setLastUpdateTime(com.google.protobuf.Timestamp.Builder builderForValue) {
       if (lastUpdateTimeBuilder_ == null) {
         lastUpdateTime_ = builderForValue.build();
@@ -849,11 +864,12 @@ public Builder setLastUpdateTime(com.google.protobuf.Timestamp.Builder builderFo
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder mergeLastUpdateTime(com.google.protobuf.Timestamp value) {
       if (lastUpdateTimeBuilder_ == null) {
         if (((bitField0_ & 0x00000002) != 0)
@@ -874,11 +890,12 @@ public Builder mergeLastUpdateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder clearLastUpdateTime() {
       bitField0_ = (bitField0_ & ~0x00000002);
       lastUpdateTime_ = null;
@@ -893,11 +910,12 @@ public Builder clearLastUpdateTime() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public com.google.protobuf.Timestamp.Builder getLastUpdateTimeBuilder() {
       bitField0_ |= 0x00000002;
       onChanged();
@@ -907,11 +925,12 @@ public com.google.protobuf.Timestamp.Builder getLastUpdateTimeBuilder() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder() {
       if (lastUpdateTimeBuilder_ != null) {
         return lastUpdateTimeBuilder_.getMessageOrBuilder();
@@ -925,10 +944,10 @@ public com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.protobuf.Timestamp,
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadataOrBuilder.java b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadataOrBuilder.java
index 1be198e1cf71..daa5ab2e1f0e 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadataOrBuilder.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadataOrBuilder.java
@@ -62,35 +62,42 @@ public interface SynthesizeLongAudioMetadataOrBuilder
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1/cloud_tts_lrs.proto;l=86
    * @return Whether the lastUpdateTime field is set.
    */
+  @java.lang.Deprecated
   boolean hasLastUpdateTime();
   /**
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1/cloud_tts_lrs.proto;l=86
    * @return The lastUpdateTime.
    */
+  @java.lang.Deprecated
   com.google.protobuf.Timestamp getLastUpdateTime();
   /**
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    */
+  @java.lang.Deprecated
   com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder();
 
   /**
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesisProto.java b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesisProto.java
index e4756b9bd742..39b391a5b43a 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesisProto.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesisProto.java
@@ -63,26 +63,28 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "gcs_uri\030\004 \001(\tB\004\342A\001\002\022G\n\005voice\030\005 \001(\01322.goo"
           + "gle.cloud.texttospeech.v1.VoiceSelection"
           + "ParamsB\004\342A\001\002\"\035\n\033SynthesizeLongAudioRespo"
-          + "nse\"\240\001\n\033SynthesizeLongAudioMetadata\022.\n\ns"
+          + "nse\"\244\001\n\033SynthesizeLongAudioMetadata\022.\n\ns"
           + "tart_time\030\001 \001(\0132\032.google.protobuf.Timest"
-          + "amp\0224\n\020last_update_time\030\002 \001(\0132\032.google.p"
-          + "rotobuf.Timestamp\022\033\n\023progress_percentage"
-          + "\030\003 \001(\0012\356\002\n\037TextToSpeechLongAudioSynthesi"
-          + "ze\022\371\001\n\023SynthesizeLongAudio\0228.google.clou"
-          + "d.texttospeech.v1.SynthesizeLongAudioReq"
-          + "uest\032\035.google.longrunning.Operation\"\210\001\312A"
-          + ":\n\033SynthesizeLongAudioResponse\022\033Synthesi"
-          + "zeLongAudioMetadata\202\323\344\223\002E\"@/v1/{parent=p"
-          + "rojects/*/locations/*/voices/*}:Synthesi"
-          + "zeLongAudio:\001*\032O\312A\033texttospeech.googleap"
-          + "is.com\322A.https://www.googleapis.com/auth"
-          + "/cloud-platformB\362\001\n com.google.cloud.tex"
-          + "ttospeech.v1B#TextToSpeechLongAudioSynth"
-          + "esisProtoP\001ZDcloud.google.com/go/texttos"
-          + "peech/apiv1/texttospeechpb;texttospeechp"
-          + "b\370\001\001\252\002\034Google.Cloud.TextToSpeech.V1\312\002\034Go"
-          + "ogle\\Cloud\\TextToSpeech\\V1\352\002\037Google::Clo"
-          + "ud::TextToSpeech::V1b\006proto3"
+          + "amp\0228\n\020last_update_time\030\002 \001(\0132\032.google.p"
+          + "rotobuf.TimestampB\002\030\001\022\033\n\023progress_percen"
+          + "tage\030\003 \001(\0012\237\003\n\037TextToSpeechLongAudioSynt"
+          + "hesize\022\252\002\n\023SynthesizeLongAudio\0228.google."
+          + "cloud.texttospeech.v1.SynthesizeLongAudi"
+          + "oRequest\032\035.google.longrunning.Operation\""
+          + "\271\001\312At\n8google.cloud.texttospeech.v1.Synt"
+          + "hesizeLongAudioResponse\0228google.cloud.te"
+          + "xttospeech.v1.SynthesizeLongAudioMetadat"
+          + "a\202\323\344\223\002<\"7/v1/{parent=projects/*/location"
+          + "s/*}:synthesizeLongAudio:\001*\032O\312A\033texttosp"
+          + "eech.googleapis.com\322A.https://www.google"
+          + "apis.com/auth/cloud-platformB\362\001\n com.goo"
+          + "gle.cloud.texttospeech.v1B#TextToSpeechL"
+          + "ongAudioSynthesisProtoP\001ZDcloud.google.c"
+          + "om/go/texttospeech/apiv1/texttospeechpb;"
+          + "texttospeechpb\370\001\001\252\002\034Google.Cloud.TextToS"
+          + "peech.V1\312\002\034Google\\Cloud\\TextToSpeech\\V1\352"
+          + "\002\037Google::Cloud::TextToSpeech::V1b\006proto"
+          + "3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechProto.java b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechProto.java
index de4fb317a3cb..338dad376861 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechProto.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechProto.java
@@ -102,38 +102,38 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "ng_rate\030\002 \001(\001B\005\342A\002\004\001\022\024\n\005pitch\030\003 \001(\001B\005\342A\002"
           + "\004\001\022\035\n\016volume_gain_db\030\004 \001(\001B\005\342A\002\004\001\022\037\n\021sam"
           + "ple_rate_hertz\030\005 \001(\005B\004\342A\001\001\022!\n\022effects_pr"
-          + "ofile_id\030\006 \003(\tB\005\342A\002\004\001\"\361\001\n\021CustomVoicePar"
+          + "ofile_id\030\006 \003(\tB\005\342A\002\004\001\"\363\001\n\021CustomVoicePar"
           + "ams\0223\n\005model\030\001 \001(\tB$\342A\001\002\372A\035\n\033automl.goog"
-          + "leapis.com/Model\022[\n\016reported_usage\030\003 \001(\016"
+          + "leapis.com/Model\022]\n\016reported_usage\030\003 \001(\016"
           + "2=.google.cloud.texttospeech.v1.CustomVo"
-          + "iceParams.ReportedUsageB\004\342A\001\001\"J\n\rReporte"
-          + "dUsage\022\036\n\032REPORTED_USAGE_UNSPECIFIED\020\000\022\014"
-          + "\n\010REALTIME\020\001\022\013\n\007OFFLINE\020\002\"1\n\030SynthesizeS"
-          + "peechResponse\022\025\n\raudio_content\030\001 \001(\014*W\n\017"
-          + "SsmlVoiceGender\022!\n\035SSML_VOICE_GENDER_UNS"
-          + "PECIFIED\020\000\022\010\n\004MALE\020\001\022\n\n\006FEMALE\020\002\022\013\n\007NEUT"
-          + "RAL\020\003*i\n\rAudioEncoding\022\036\n\032AUDIO_ENCODING"
-          + "_UNSPECIFIED\020\000\022\014\n\010LINEAR16\020\001\022\007\n\003MP3\020\002\022\014\n"
-          + "\010OGG_OPUS\020\003\022\t\n\005MULAW\020\005\022\010\n\004ALAW\020\0062\264\003\n\014Tex"
-          + "tToSpeech\022\223\001\n\nListVoices\022/.google.cloud."
-          + "texttospeech.v1.ListVoicesRequest\0320.goog"
-          + "le.cloud.texttospeech.v1.ListVoicesRespo"
-          + "nse\"\"\332A\rlanguage_code\202\323\344\223\002\014\022\n/v1/voices\022"
-          + "\274\001\n\020SynthesizeSpeech\0225.google.cloud.text"
-          + "tospeech.v1.SynthesizeSpeechRequest\0326.go"
-          + "ogle.cloud.texttospeech.v1.SynthesizeSpe"
-          + "echResponse\"9\332A\030input,voice,audio_config"
-          + "\202\323\344\223\002\030\"\023/v1/text:synthesize:\001*\032O\312A\033textt"
-          + "ospeech.googleapis.com\322A.https://www.goo"
-          + "gleapis.com/auth/cloud-platformB\270\002\n com."
-          + "google.cloud.texttospeech.v1B\021TextToSpee"
-          + "chProtoP\001ZDcloud.google.com/go/texttospe"
-          + "ech/apiv1/texttospeechpb;texttospeechpb\370"
-          + "\001\001\252\002\034Google.Cloud.TextToSpeech.V1\312\002\034Goog"
-          + "le\\Cloud\\TextToSpeech\\V1\352\002\037Google::Cloud"
-          + "::TextToSpeech::V1\352AU\n\033automl.googleapis"
-          + ".com/Model\0226projects/{project}/locations"
-          + "/{location}/models/{model}b\006proto3"
+          + "iceParams.ReportedUsageB\006\030\001\342A\001\001\"J\n\rRepor"
+          + "tedUsage\022\036\n\032REPORTED_USAGE_UNSPECIFIED\020\000"
+          + "\022\014\n\010REALTIME\020\001\022\013\n\007OFFLINE\020\002\"1\n\030Synthesiz"
+          + "eSpeechResponse\022\025\n\raudio_content\030\001 \001(\014*W"
+          + "\n\017SsmlVoiceGender\022!\n\035SSML_VOICE_GENDER_U"
+          + "NSPECIFIED\020\000\022\010\n\004MALE\020\001\022\n\n\006FEMALE\020\002\022\013\n\007NE"
+          + "UTRAL\020\003*i\n\rAudioEncoding\022\036\n\032AUDIO_ENCODI"
+          + "NG_UNSPECIFIED\020\000\022\014\n\010LINEAR16\020\001\022\007\n\003MP3\020\002\022"
+          + "\014\n\010OGG_OPUS\020\003\022\t\n\005MULAW\020\005\022\010\n\004ALAW\020\0062\264\003\n\014T"
+          + "extToSpeech\022\223\001\n\nListVoices\022/.google.clou"
+          + "d.texttospeech.v1.ListVoicesRequest\0320.go"
+          + "ogle.cloud.texttospeech.v1.ListVoicesRes"
+          + "ponse\"\"\332A\rlanguage_code\202\323\344\223\002\014\022\n/v1/voice"
+          + "s\022\274\001\n\020SynthesizeSpeech\0225.google.cloud.te"
+          + "xttospeech.v1.SynthesizeSpeechRequest\0326."
+          + "google.cloud.texttospeech.v1.SynthesizeS"
+          + "peechResponse\"9\332A\030input,voice,audio_conf"
+          + "ig\202\323\344\223\002\030\"\023/v1/text:synthesize:\001*\032O\312A\033tex"
+          + "ttospeech.googleapis.com\322A.https://www.g"
+          + "oogleapis.com/auth/cloud-platformB\270\002\n co"
+          + "m.google.cloud.texttospeech.v1B\021TextToSp"
+          + "eechProtoP\001ZDcloud.google.com/go/texttos"
+          + "peech/apiv1/texttospeechpb;texttospeechp"
+          + "b\370\001\001\252\002\034Google.Cloud.TextToSpeech.V1\312\002\034Go"
+          + "ogle\\Cloud\\TextToSpeech\\V1\352\002\037Google::Clo"
+          + "ud::TextToSpeech::V1\352AU\n\033automl.googleap"
+          + "is.com/Model\0226projects/{project}/locatio"
+          + "ns/{location}/models/{model}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts.proto b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts.proto
index 72fe71282b39..9ab65b1b767a 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts.proto
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -266,9 +266,8 @@ message AudioConfig {
 
 // Description of the custom voice to be synthesized.
 message CustomVoiceParams {
-  // The usage of the synthesized audio. You must report your honest and
-  // correct usage of the service as it's regulated by contract and will cause
-  // significant difference in billing.
+  // Deprecated. The usage of the synthesized audio. Usage does not affect
+  // billing.
   enum ReportedUsage {
     // Request with reported usage unspecified will be rejected.
     REPORTED_USAGE_UNSPECIFIED = 0;
@@ -289,8 +288,9 @@ message CustomVoiceParams {
     (google.api.resource_reference) = { type: "automl.googleapis.com/Model" }
   ];
 
-  // Optional. The usage of the synthesized audio to be reported.
-  ReportedUsage reported_usage = 3 [(google.api.field_behavior) = OPTIONAL];
+  // Optional. Deprecated. The usage of the synthesized audio to be reported.
+  ReportedUsage reported_usage = 3
+      [deprecated = true, (google.api.field_behavior) = OPTIONAL];
 }
 
 // The message returned to the client by the `SynthesizeSpeech` method.
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts_lrs.proto b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts_lrs.proto
index a903eb63f0a6..67bc4bd86477 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts_lrs.proto
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/proto/google/cloud/texttospeech/v1/cloud_tts_lrs.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -42,12 +42,12 @@ service TextToSpeechLongAudioSynthesize {
   rpc SynthesizeLongAudio(SynthesizeLongAudioRequest)
       returns (google.longrunning.Operation) {
     option (google.api.http) = {
-      post: "/v1/{parent=projects/*/locations/*/voices/*}:SynthesizeLongAudio"
+      post: "/v1/{parent=projects/*/locations/*}:synthesizeLongAudio"
       body: "*"
     };
     option (google.longrunning.operation_info) = {
-      response_type: "SynthesizeLongAudioResponse"
-      metadata_type: "SynthesizeLongAudioMetadata"
+      response_type: "google.cloud.texttospeech.v1.SynthesizeLongAudioResponse"
+      metadata_type: "google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata"
     };
   }
 }
@@ -83,8 +83,8 @@ message SynthesizeLongAudioMetadata {
   // Time when the request was received.
   google.protobuf.Timestamp start_time = 1;
 
-  // Time of the most recent processing update.
-  google.protobuf.Timestamp last_update_time = 2;
+  // Deprecated. Do not use.
+  google.protobuf.Timestamp last_update_time = 2 [deprecated = true];
 
   // The progress of the most recent processing update in percentage, ie. 70.0%.
   double progress_percentage = 3;
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/AudioEncoding.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/AudioEncoding.java
index aed6558fe823..a24835c8592d 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/AudioEncoding.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/AudioEncoding.java
@@ -33,7 +33,8 @@ public enum AudioEncoding implements com.google.protobuf.ProtocolMessageEnum {
    *
    *
    * <pre>
-   * Not specified. Will return result [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT].
+   * Not specified. Will return result
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT].
    * </pre>
    *
    * <code>AUDIO_ENCODING_UNSPECIFIED = 0;</code>
@@ -112,7 +113,8 @@ public enum AudioEncoding implements com.google.protobuf.ProtocolMessageEnum {
    *
    *
    * <pre>
-   * Not specified. Will return result [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT].
+   * Not specified. Will return result
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT].
    * </pre>
    *
    * <code>AUDIO_ENCODING_UNSPECIFIED = 0;</code>
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParams.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParams.java
index c474369baccd..6b5bc2e13120 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParams.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParams.java
@@ -67,9 +67,8 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * The usage of the synthesized audio. You must report your honest and
-   * correct usage of the service as it's regulated by contract and will cause
-   * significant difference in billing.
+   * Deprecated. The usage of the synthesized audio. Usage does not affect
+   * billing.
    * </pre>
    *
    * Protobuf enum {@code google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage}
@@ -291,16 +290,19 @@ public com.google.protobuf.ByteString getModelBytes() {
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+   *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
    * @return The enum numeric value on the wire for reportedUsage.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public int getReportedUsageValue() {
     return reportedUsage_;
   }
@@ -308,16 +310,19 @@ public int getReportedUsageValue() {
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+   *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
    * @return The reportedUsage.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage getReportedUsage() {
     com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage result =
         com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage.forNumber(
@@ -819,16 +824,19 @@ public Builder setModelBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+     *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
      * @return The enum numeric value on the wire for reportedUsage.
      */
     @java.lang.Override
+    @java.lang.Deprecated
     public int getReportedUsageValue() {
       return reportedUsage_;
     }
@@ -836,16 +844,19 @@ public int getReportedUsageValue() {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+     *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
      * @param value The enum numeric value on the wire for reportedUsage to set.
      * @return This builder for chaining.
      */
+    @java.lang.Deprecated
     public Builder setReportedUsageValue(int value) {
       reportedUsage_ = value;
       bitField0_ |= 0x00000002;
@@ -856,16 +867,19 @@ public Builder setReportedUsageValue(int value) {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+     *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
      * @return The reportedUsage.
      */
     @java.lang.Override
+    @java.lang.Deprecated
     public com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage
         getReportedUsage() {
       com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage result =
@@ -879,16 +893,19 @@ public Builder setReportedUsageValue(int value) {
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+     *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
      * @param value The reportedUsage to set.
      * @return This builder for chaining.
      */
+    @java.lang.Deprecated
     public Builder setReportedUsage(
         com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage value) {
       if (value == null) {
@@ -903,15 +920,18 @@ public Builder setReportedUsage(
      *
      *
      * <pre>
-     * Optional. The usage of the synthesized audio to be reported.
+     * Optional. Deprecated. The usage of the synthesized audio to be reported.
      * </pre>
      *
      * <code>
-     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+     * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
      * </code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+     *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
      * @return This builder for chaining.
      */
+    @java.lang.Deprecated
     public Builder clearReportedUsage() {
       bitField0_ = (bitField0_ & ~0x00000002);
       reportedUsage_ = 0;
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParamsOrBuilder.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParamsOrBuilder.java
index 1245bfa57321..544e992b6115 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParamsOrBuilder.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomVoiceParamsOrBuilder.java
@@ -56,28 +56,34 @@ public interface CustomVoiceParamsOrBuilder
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+   *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
    * @return The enum numeric value on the wire for reportedUsage.
    */
+  @java.lang.Deprecated
   int getReportedUsageValue();
   /**
    *
    *
    * <pre>
-   * Optional. The usage of the synthesized audio to be reported.
+   * Optional. Deprecated. The usage of the synthesized audio to be reported.
    * </pre>
    *
    * <code>
-   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [(.google.api.field_behavior) = OPTIONAL];
+   * .google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage reported_usage = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
    * </code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.CustomVoiceParams.reported_usage is deprecated.
+   *     See google/cloud/texttospeech/v1beta1/cloud_tts.proto;l=306
    * @return The reportedUsage.
    */
+  @java.lang.Deprecated
   com.google.cloud.texttospeech.v1beta1.CustomVoiceParams.ReportedUsage getReportedUsage();
 }
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInput.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInput.java
index 9ba6e1cd29a9..7994069d126b 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInput.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInput.java
@@ -24,8 +24,8 @@
  * <pre>
  * Contains text input to be synthesized. Either `text` or `ssml` must be
  * supplied. Supplying both or neither returns
- * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. The input size is limited to 5000
- * bytes.
+ * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. The
+ * input size is limited to 5000 bytes.
  * </pre>
  *
  * Protobuf type {@code google.cloud.texttospeech.v1beta1.SynthesisInput}
@@ -189,7 +189,8 @@ public com.google.protobuf.ByteString getTextBytes() {
    * <pre>
    * The SSML document to be synthesized. The SSML document must be valid
    * and well-formed. Otherwise the RPC will fail and return
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+   * more information, see
    * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    * </pre>
    *
@@ -206,7 +207,8 @@ public boolean hasSsml() {
    * <pre>
    * The SSML document to be synthesized. The SSML document must be valid
    * and well-formed. Otherwise the RPC will fail and return
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+   * more information, see
    * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    * </pre>
    *
@@ -236,7 +238,8 @@ public java.lang.String getSsml() {
    * <pre>
    * The SSML document to be synthesized. The SSML document must be valid
    * and well-formed. Otherwise the RPC will fail and return
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+   * more information, see
    * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    * </pre>
    *
@@ -452,8 +455,8 @@ protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.Build
    * <pre>
    * Contains text input to be synthesized. Either `text` or `ssml` must be
    * supplied. Supplying both or neither returns
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. The input size is limited to 5000
-   * bytes.
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. The
+   * input size is limited to 5000 bytes.
    * </pre>
    *
    * Protobuf type {@code google.cloud.texttospeech.v1beta1.SynthesisInput}
@@ -813,7 +816,8 @@ public Builder setTextBytes(com.google.protobuf.ByteString value) {
      * <pre>
      * The SSML document to be synthesized. The SSML document must be valid
      * and well-formed. Otherwise the RPC will fail and return
-     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+     * more information, see
      * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
      * </pre>
      *
@@ -831,7 +835,8 @@ public boolean hasSsml() {
      * <pre>
      * The SSML document to be synthesized. The SSML document must be valid
      * and well-formed. Otherwise the RPC will fail and return
-     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+     * more information, see
      * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
      * </pre>
      *
@@ -862,7 +867,8 @@ public java.lang.String getSsml() {
      * <pre>
      * The SSML document to be synthesized. The SSML document must be valid
      * and well-formed. Otherwise the RPC will fail and return
-     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+     * more information, see
      * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
      * </pre>
      *
@@ -893,7 +899,8 @@ public com.google.protobuf.ByteString getSsmlBytes() {
      * <pre>
      * The SSML document to be synthesized. The SSML document must be valid
      * and well-formed. Otherwise the RPC will fail and return
-     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+     * more information, see
      * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
      * </pre>
      *
@@ -917,7 +924,8 @@ public Builder setSsml(java.lang.String value) {
      * <pre>
      * The SSML document to be synthesized. The SSML document must be valid
      * and well-formed. Otherwise the RPC will fail and return
-     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+     * more information, see
      * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
      * </pre>
      *
@@ -939,7 +947,8 @@ public Builder clearSsml() {
      * <pre>
      * The SSML document to be synthesized. The SSML document must be valid
      * and well-formed. Otherwise the RPC will fail and return
-     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+     * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+     * more information, see
      * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
      * </pre>
      *
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInputOrBuilder.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInputOrBuilder.java
index 3bdc9b09efc2..dde0e0bd92b6 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInputOrBuilder.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesisInputOrBuilder.java
@@ -66,7 +66,8 @@ public interface SynthesisInputOrBuilder
    * <pre>
    * The SSML document to be synthesized. The SSML document must be valid
    * and well-formed. Otherwise the RPC will fail and return
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+   * more information, see
    * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    * </pre>
    *
@@ -81,7 +82,8 @@ public interface SynthesisInputOrBuilder
    * <pre>
    * The SSML document to be synthesized. The SSML document must be valid
    * and well-formed. Otherwise the RPC will fail and return
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+   * more information, see
    * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    * </pre>
    *
@@ -96,7 +98,8 @@ public interface SynthesisInputOrBuilder
    * <pre>
    * The SSML document to be synthesized. The SSML document must be valid
    * and well-formed. Otherwise the RPC will fail and return
-   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+   * [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+   * more information, see
    * [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    * </pre>
    *
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadata.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadata.java
index 1175817f6295..8e6cfc3412b1 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadata.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadata.java
@@ -112,14 +112,17 @@ public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto;l=86
    * @return Whether the lastUpdateTime field is set.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public boolean hasLastUpdateTime() {
     return lastUpdateTime_ != null;
   }
@@ -127,14 +130,17 @@ public boolean hasLastUpdateTime() {
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto;l=86
    * @return The lastUpdateTime.
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public com.google.protobuf.Timestamp getLastUpdateTime() {
     return lastUpdateTime_ == null
         ? com.google.protobuf.Timestamp.getDefaultInstance()
@@ -144,12 +150,13 @@ public com.google.protobuf.Timestamp getLastUpdateTime() {
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    */
   @java.lang.Override
+  @java.lang.Deprecated
   public com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder() {
     return lastUpdateTime_ == null
         ? com.google.protobuf.Timestamp.getDefaultInstance()
@@ -777,13 +784,16 @@ public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata.last_update_time is
+     *     deprecated. See google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto;l=86
      * @return Whether the lastUpdateTime field is set.
      */
+    @java.lang.Deprecated
     public boolean hasLastUpdateTime() {
       return ((bitField0_ & 0x00000002) != 0);
     }
@@ -791,13 +801,16 @@ public boolean hasLastUpdateTime() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      *
+     * @deprecated google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata.last_update_time is
+     *     deprecated. See google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto;l=86
      * @return The lastUpdateTime.
      */
+    @java.lang.Deprecated
     public com.google.protobuf.Timestamp getLastUpdateTime() {
       if (lastUpdateTimeBuilder_ == null) {
         return lastUpdateTime_ == null
@@ -811,11 +824,12 @@ public com.google.protobuf.Timestamp getLastUpdateTime() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder setLastUpdateTime(com.google.protobuf.Timestamp value) {
       if (lastUpdateTimeBuilder_ == null) {
         if (value == null) {
@@ -833,11 +847,12 @@ public Builder setLastUpdateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder setLastUpdateTime(com.google.protobuf.Timestamp.Builder builderForValue) {
       if (lastUpdateTimeBuilder_ == null) {
         lastUpdateTime_ = builderForValue.build();
@@ -852,11 +867,12 @@ public Builder setLastUpdateTime(com.google.protobuf.Timestamp.Builder builderFo
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder mergeLastUpdateTime(com.google.protobuf.Timestamp value) {
       if (lastUpdateTimeBuilder_ == null) {
         if (((bitField0_ & 0x00000002) != 0)
@@ -877,11 +893,12 @@ public Builder mergeLastUpdateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public Builder clearLastUpdateTime() {
       bitField0_ = (bitField0_ & ~0x00000002);
       lastUpdateTime_ = null;
@@ -896,11 +913,12 @@ public Builder clearLastUpdateTime() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public com.google.protobuf.Timestamp.Builder getLastUpdateTimeBuilder() {
       bitField0_ |= 0x00000002;
       onChanged();
@@ -910,11 +928,12 @@ public com.google.protobuf.Timestamp.Builder getLastUpdateTimeBuilder() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
+    @java.lang.Deprecated
     public com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder() {
       if (lastUpdateTimeBuilder_ != null) {
         return lastUpdateTimeBuilder_.getMessageOrBuilder();
@@ -928,10 +947,10 @@ public com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder() {
      *
      *
      * <pre>
-     * Time of the most recent processing update.
+     * Deprecated. Do not use.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+     * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
      */
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.protobuf.Timestamp,
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadataOrBuilder.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadataOrBuilder.java
index 0fa3ac6aa48e..0c30628ec443 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadataOrBuilder.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeLongAudioMetadataOrBuilder.java
@@ -62,35 +62,42 @@ public interface SynthesizeLongAudioMetadataOrBuilder
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto;l=86
    * @return Whether the lastUpdateTime field is set.
    */
+  @java.lang.Deprecated
   boolean hasLastUpdateTime();
   /**
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    *
+   * @deprecated google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata.last_update_time is
+   *     deprecated. See google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto;l=86
    * @return The lastUpdateTime.
    */
+  @java.lang.Deprecated
   com.google.protobuf.Timestamp getLastUpdateTime();
   /**
    *
    *
    * <pre>
-   * Time of the most recent processing update.
+   * Deprecated. Do not use.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp last_update_time = 2;</code>
+   * <code>.google.protobuf.Timestamp last_update_time = 2 [deprecated = true];</code>
    */
+  @java.lang.Deprecated
   com.google.protobuf.TimestampOrBuilder getLastUpdateTimeOrBuilder();
 
   /**
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesisProto.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesisProto.java
index 801061522029..7a9715b4f290 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesisProto.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesisProto.java
@@ -63,28 +63,29 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "ioConfigB\004\342A\001\002\022\034\n\016output_gcs_uri\030\004 \001(\tB\004"
           + "\342A\001\002\022L\n\005voice\030\005 \001(\01327.google.cloud.textt"
           + "ospeech.v1beta1.VoiceSelectionParamsB\004\342A"
-          + "\001\002\"\035\n\033SynthesizeLongAudioResponse\"\240\001\n\033Sy"
+          + "\001\002\"\035\n\033SynthesizeLongAudioResponse\"\244\001\n\033Sy"
           + "nthesizeLongAudioMetadata\022.\n\nstart_time\030"
-          + "\001 \001(\0132\032.google.protobuf.Timestamp\0224\n\020las"
+          + "\001 \001(\0132\032.google.protobuf.Timestamp\0228\n\020las"
           + "t_update_time\030\002 \001(\0132\032.google.protobuf.Ti"
-          + "mestamp\022\033\n\023progress_percentage\030\003 \001(\0012\370\002\n"
-          + "\037TextToSpeechLongAudioSynthesize\022\203\002\n\023Syn"
-          + "thesizeLongAudio\022=.google.cloud.texttosp"
-          + "eech.v1beta1.SynthesizeLongAudioRequest\032"
-          + "\035.google.longrunning.Operation\"\215\001\312A:\n\033Sy"
-          + "nthesizeLongAudioResponse\022\033SynthesizeLon"
-          + "gAudioMetadata\202\323\344\223\002J\"E/v1beta1/{parent=p"
-          + "rojects/*/locations/*/voices/*}:Synthesi"
-          + "zeLongAudio:\001*\032O\312A\033texttospeech.googleap"
-          + "is.com\322A.https://www.googleapis.com/auth"
-          + "/cloud-platformB\213\002\n%com.google.cloud.tex"
-          + "ttospeech.v1beta1B#TextToSpeechLongAudio"
-          + "SynthesisProtoP\001ZIcloud.google.com/go/te"
-          + "xttospeech/apiv1beta1/texttospeechpb;tex"
-          + "ttospeechpb\370\001\001\252\002!Google.Cloud.TextToSpee"
-          + "ch.V1Beta1\312\002!Google\\Cloud\\TextToSpeech\\V"
-          + "1beta1\352\002$Google::Cloud::TextToSpeech::V1"
-          + "beta1b\006proto3"
+          + "mestampB\002\030\001\022\033\n\023progress_percentage\030\003 \001(\001"
+          + "2\263\003\n\037TextToSpeechLongAudioSynthesize\022\276\002\n"
+          + "\023SynthesizeLongAudio\022=.google.cloud.text"
+          + "tospeech.v1beta1.SynthesizeLongAudioRequ"
+          + "est\032\035.google.longrunning.Operation\"\310\001\312A~"
+          + "\n=google.cloud.texttospeech.v1beta1.Synt"
+          + "hesizeLongAudioResponse\022=google.cloud.te"
+          + "xttospeech.v1beta1.SynthesizeLongAudioMe"
+          + "tadata\202\323\344\223\002A\"</v1beta1/{parent=projects/"
+          + "*/locations/*}:synthesizeLongAudio:\001*\032O\312"
+          + "A\033texttospeech.googleapis.com\322A.https://"
+          + "www.googleapis.com/auth/cloud-platformB\213"
+          + "\002\n%com.google.cloud.texttospeech.v1beta1"
+          + "B#TextToSpeechLongAudioSynthesisProtoP\001Z"
+          + "Icloud.google.com/go/texttospeech/apiv1b"
+          + "eta1/texttospeechpb;texttospeechpb\370\001\001\252\002!"
+          + "Google.Cloud.TextToSpeech.V1Beta1\312\002!Goog"
+          + "le\\Cloud\\TextToSpeech\\V1beta1\352\002$Google::"
+          + "Cloud::TextToSpeech::V1beta1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechProto.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechProto.java
index 23a10378dfca..285738a2699d 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechProto.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechProto.java
@@ -112,44 +112,45 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\n\005pitch\030\003 \001(\001B\005\342A\002\004\001\022\035\n\016volume_gain_db\030\004"
           + " \001(\001B\005\342A\002\004\001\022\037\n\021sample_rate_hertz\030\005 \001(\005B\004"
           + "\342A\001\001\022!\n\022effects_profile_id\030\006 \003(\tB\005\342A\002\004\001\""
-          + "\366\001\n\021CustomVoiceParams\0223\n\005model\030\001 \001(\tB$\342A"
-          + "\001\002\372A\035\n\033automl.googleapis.com/Model\022`\n\016re"
+          + "\370\001\n\021CustomVoiceParams\0223\n\005model\030\001 \001(\tB$\342A"
+          + "\001\002\372A\035\n\033automl.googleapis.com/Model\022b\n\016re"
           + "ported_usage\030\003 \001(\0162B.google.cloud.textto"
           + "speech.v1beta1.CustomVoiceParams.Reporte"
-          + "dUsageB\004\342A\001\001\"J\n\rReportedUsage\022\036\n\032REPORTE"
-          + "D_USAGE_UNSPECIFIED\020\000\022\014\n\010REALTIME\020\001\022\013\n\007O"
-          + "FFLINE\020\002\"\271\001\n\030SynthesizeSpeechResponse\022\025\n"
-          + "\raudio_content\030\001 \001(\014\022@\n\ntimepoints\030\002 \003(\013"
-          + "2,.google.cloud.texttospeech.v1beta1.Tim"
-          + "epoint\022D\n\014audio_config\030\004 \001(\0132..google.cl"
-          + "oud.texttospeech.v1beta1.AudioConfig\"4\n\t"
-          + "Timepoint\022\021\n\tmark_name\030\004 \001(\t\022\024\n\014time_sec"
-          + "onds\030\003 \001(\001*W\n\017SsmlVoiceGender\022!\n\035SSML_VO"
-          + "ICE_GENDER_UNSPECIFIED\020\000\022\010\n\004MALE\020\001\022\n\n\006FE"
-          + "MALE\020\002\022\013\n\007NEUTRAL\020\003*z\n\rAudioEncoding\022\036\n\032"
-          + "AUDIO_ENCODING_UNSPECIFIED\020\000\022\014\n\010LINEAR16"
-          + "\020\001\022\007\n\003MP3\020\002\022\017\n\013MP3_64_KBPS\020\004\022\014\n\010OGG_OPUS"
-          + "\020\003\022\t\n\005MULAW\020\005\022\010\n\004ALAW\020\0062\322\003\n\014TextToSpeech"
-          + "\022\242\001\n\nListVoices\0224.google.cloud.texttospe"
-          + "ech.v1beta1.ListVoicesRequest\0325.google.c"
-          + "loud.texttospeech.v1beta1.ListVoicesResp"
-          + "onse\"\'\332A\rlanguage_code\202\323\344\223\002\021\022\017/v1beta1/v"
-          + "oices\022\313\001\n\020SynthesizeSpeech\022:.google.clou"
-          + "d.texttospeech.v1beta1.SynthesizeSpeechR"
-          + "equest\032;.google.cloud.texttospeech.v1bet"
-          + "a1.SynthesizeSpeechResponse\">\332A\030input,vo"
-          + "ice,audio_config\202\323\344\223\002\035\"\030/v1beta1/text:sy"
-          + "nthesize:\001*\032O\312A\033texttospeech.googleapis."
-          + "com\322A.https://www.googleapis.com/auth/cl"
-          + "oud-platformB\321\002\n%com.google.cloud.textto"
-          + "speech.v1beta1B\021TextToSpeechProtoP\001ZIclo"
-          + "ud.google.com/go/texttospeech/apiv1beta1"
-          + "/texttospeechpb;texttospeechpb\370\001\001\252\002!Goog"
-          + "le.Cloud.TextToSpeech.V1Beta1\312\002!Google\\C"
-          + "loud\\TextToSpeech\\V1beta1\352\002$Google::Clou"
-          + "d::TextToSpeech::V1beta1\352AU\n\033automl.goog"
-          + "leapis.com/Model\0226projects/{project}/loc"
-          + "ations/{location}/models/{model}b\006proto3"
+          + "dUsageB\006\030\001\342A\001\001\"J\n\rReportedUsage\022\036\n\032REPOR"
+          + "TED_USAGE_UNSPECIFIED\020\000\022\014\n\010REALTIME\020\001\022\013\n"
+          + "\007OFFLINE\020\002\"\271\001\n\030SynthesizeSpeechResponse\022"
+          + "\025\n\raudio_content\030\001 \001(\014\022@\n\ntimepoints\030\002 \003"
+          + "(\0132,.google.cloud.texttospeech.v1beta1.T"
+          + "imepoint\022D\n\014audio_config\030\004 \001(\0132..google."
+          + "cloud.texttospeech.v1beta1.AudioConfig\"4"
+          + "\n\tTimepoint\022\021\n\tmark_name\030\004 \001(\t\022\024\n\014time_s"
+          + "econds\030\003 \001(\001*W\n\017SsmlVoiceGender\022!\n\035SSML_"
+          + "VOICE_GENDER_UNSPECIFIED\020\000\022\010\n\004MALE\020\001\022\n\n\006"
+          + "FEMALE\020\002\022\013\n\007NEUTRAL\020\003*z\n\rAudioEncoding\022\036"
+          + "\n\032AUDIO_ENCODING_UNSPECIFIED\020\000\022\014\n\010LINEAR"
+          + "16\020\001\022\007\n\003MP3\020\002\022\017\n\013MP3_64_KBPS\020\004\022\014\n\010OGG_OP"
+          + "US\020\003\022\t\n\005MULAW\020\005\022\010\n\004ALAW\020\0062\322\003\n\014TextToSpee"
+          + "ch\022\242\001\n\nListVoices\0224.google.cloud.texttos"
+          + "peech.v1beta1.ListVoicesRequest\0325.google"
+          + ".cloud.texttospeech.v1beta1.ListVoicesRe"
+          + "sponse\"\'\332A\rlanguage_code\202\323\344\223\002\021\022\017/v1beta1"
+          + "/voices\022\313\001\n\020SynthesizeSpeech\022:.google.cl"
+          + "oud.texttospeech.v1beta1.SynthesizeSpeec"
+          + "hRequest\032;.google.cloud.texttospeech.v1b"
+          + "eta1.SynthesizeSpeechResponse\">\332A\030input,"
+          + "voice,audio_config\202\323\344\223\002\035\"\030/v1beta1/text:"
+          + "synthesize:\001*\032O\312A\033texttospeech.googleapi"
+          + "s.com\322A.https://www.googleapis.com/auth/"
+          + "cloud-platformB\321\002\n%com.google.cloud.text"
+          + "tospeech.v1beta1B\021TextToSpeechProtoP\001ZIc"
+          + "loud.google.com/go/texttospeech/apiv1bet"
+          + "a1/texttospeechpb;texttospeechpb\370\001\001\252\002!Go"
+          + "ogle.Cloud.TextToSpeech.V1Beta1\312\002!Google"
+          + "\\Cloud\\TextToSpeech\\V1beta1\352\002$Google::Cl"
+          + "oud::TextToSpeech::V1beta1\352AU\n\033automl.go"
+          + "ogleapis.com/Model\0226projects/{project}/l"
+          + "ocations/{location}/models/{model}b\006prot"
+          + "o3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParams.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParams.java
index 2fff4e81cded..7af3802e9679 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParams.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParams.java
@@ -72,9 +72,9 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. The language (and potentially also the region) of the voice expressed as a
-   * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-   * "en-US". This should not include a script tag (e.g. use
+   * Required. The language (and potentially also the region) of the voice
+   * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+   * language tag, e.g. "en-US". This should not include a script tag (e.g. use
    * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
    * from the input provided in the SynthesisInput.  The TTS service
    * will use this parameter to help choose an appropriate voice.  Note that
@@ -105,9 +105,9 @@ public java.lang.String getLanguageCode() {
    *
    *
    * <pre>
-   * Required. The language (and potentially also the region) of the voice expressed as a
-   * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-   * "en-US". This should not include a script tag (e.g. use
+   * Required. The language (and potentially also the region) of the voice
+   * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+   * language tag, e.g. "en-US". This should not include a script tag (e.g. use
    * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
    * from the input provided in the SynthesisInput.  The TTS service
    * will use this parameter to help choose an appropriate voice.  Note that
@@ -720,9 +720,9 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. The language (and potentially also the region) of the voice expressed as a
-     * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-     * "en-US". This should not include a script tag (e.g. use
+     * Required. The language (and potentially also the region) of the voice
+     * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+     * language tag, e.g. "en-US". This should not include a script tag (e.g. use
      * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
      * from the input provided in the SynthesisInput.  The TTS service
      * will use this parameter to help choose an appropriate voice.  Note that
@@ -752,9 +752,9 @@ public java.lang.String getLanguageCode() {
      *
      *
      * <pre>
-     * Required. The language (and potentially also the region) of the voice expressed as a
-     * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-     * "en-US". This should not include a script tag (e.g. use
+     * Required. The language (and potentially also the region) of the voice
+     * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+     * language tag, e.g. "en-US". This should not include a script tag (e.g. use
      * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
      * from the input provided in the SynthesisInput.  The TTS service
      * will use this parameter to help choose an appropriate voice.  Note that
@@ -784,9 +784,9 @@ public com.google.protobuf.ByteString getLanguageCodeBytes() {
      *
      *
      * <pre>
-     * Required. The language (and potentially also the region) of the voice expressed as a
-     * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-     * "en-US". This should not include a script tag (e.g. use
+     * Required. The language (and potentially also the region) of the voice
+     * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+     * language tag, e.g. "en-US". This should not include a script tag (e.g. use
      * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
      * from the input provided in the SynthesisInput.  The TTS service
      * will use this parameter to help choose an appropriate voice.  Note that
@@ -815,9 +815,9 @@ public Builder setLanguageCode(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The language (and potentially also the region) of the voice expressed as a
-     * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-     * "en-US". This should not include a script tag (e.g. use
+     * Required. The language (and potentially also the region) of the voice
+     * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+     * language tag, e.g. "en-US". This should not include a script tag (e.g. use
      * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
      * from the input provided in the SynthesisInput.  The TTS service
      * will use this parameter to help choose an appropriate voice.  Note that
@@ -842,9 +842,9 @@ public Builder clearLanguageCode() {
      *
      *
      * <pre>
-     * Required. The language (and potentially also the region) of the voice expressed as a
-     * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-     * "en-US". This should not include a script tag (e.g. use
+     * Required. The language (and potentially also the region) of the voice
+     * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+     * language tag, e.g. "en-US". This should not include a script tag (e.g. use
      * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
      * from the input provided in the SynthesisInput.  The TTS service
      * will use this parameter to help choose an appropriate voice.  Note that
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParamsOrBuilder.java b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParamsOrBuilder.java
index 8f3c86ad7101..f32480d17a56 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParamsOrBuilder.java
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/VoiceSelectionParamsOrBuilder.java
@@ -27,9 +27,9 @@ public interface VoiceSelectionParamsOrBuilder
    *
    *
    * <pre>
-   * Required. The language (and potentially also the region) of the voice expressed as a
-   * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-   * "en-US". This should not include a script tag (e.g. use
+   * Required. The language (and potentially also the region) of the voice
+   * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+   * language tag, e.g. "en-US". This should not include a script tag (e.g. use
    * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
    * from the input provided in the SynthesisInput.  The TTS service
    * will use this parameter to help choose an appropriate voice.  Note that
@@ -49,9 +49,9 @@ public interface VoiceSelectionParamsOrBuilder
    *
    *
    * <pre>
-   * Required. The language (and potentially also the region) of the voice expressed as a
-   * [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-   * "en-US". This should not include a script tag (e.g. use
+   * Required. The language (and potentially also the region) of the voice
+   * expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+   * language tag, e.g. "en-US". This should not include a script tag (e.g. use
    * "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
    * from the input provided in the SynthesisInput.  The TTS service
    * will use this parameter to help choose an appropriate voice.  Note that
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts.proto b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts.proto
index b1cd1515356f..8a3d29a16ab7 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts.proto
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -37,7 +37,8 @@ option (google.api.resource_definition) = {
 // Service that implements Google Cloud Text-to-Speech API.
 service TextToSpeech {
   option (google.api.default_host) = "texttospeech.googleapis.com";
-  option (google.api.oauth_scopes) = "https://www.googleapis.com/auth/cloud-platform";
+  option (google.api.oauth_scopes) =
+      "https://www.googleapis.com/auth/cloud-platform";
 
   // Returns a list of Voice supported for synthesis.
   rpc ListVoices(ListVoicesRequest) returns (ListVoicesResponse) {
@@ -49,7 +50,8 @@ service TextToSpeech {
 
   // Synthesizes speech synchronously: receive results after all text input
   // has been processed.
-  rpc SynthesizeSpeech(SynthesizeSpeechRequest) returns (SynthesizeSpeechResponse) {
+  rpc SynthesizeSpeech(SynthesizeSpeechRequest)
+      returns (SynthesizeSpeechResponse) {
     option (google.api.http) = {
       post: "/v1beta1/text:synthesize"
       body: "*"
@@ -81,7 +83,8 @@ enum SsmlVoiceGender {
 // Configuration to set up audio encoder. The encoding determines the output
 // audio format that we'd like.
 enum AudioEncoding {
-  // Not specified. Will return result [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT].
+  // Not specified. Will return result
+  // [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT].
   AUDIO_ENCODING_UNSPECIFIED = 0;
 
   // Uncompressed 16-bit signed little-endian samples (Linear PCM).
@@ -171,8 +174,8 @@ message SynthesizeSpeechRequest {
 
 // Contains text input to be synthesized. Either `text` or `ssml` must be
 // supplied. Supplying both or neither returns
-// [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. The input size is limited to 5000
-// bytes.
+// [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. The
+// input size is limited to 5000 bytes.
 message SynthesisInput {
   // The input source, which is either plain text or SSML.
   oneof input_source {
@@ -181,7 +184,8 @@ message SynthesisInput {
 
     // The SSML document to be synthesized. The SSML document must be valid
     // and well-formed. Otherwise the RPC will fail and return
-    // [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For more information, see
+    // [google.rpc.Code.INVALID_ARGUMENT][google.rpc.Code.INVALID_ARGUMENT]. For
+    // more information, see
     // [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
     string ssml = 2;
   }
@@ -189,9 +193,9 @@ message SynthesisInput {
 
 // Description of which voice to use for a synthesis request.
 message VoiceSelectionParams {
-  // Required. The language (and potentially also the region) of the voice expressed as a
-  // [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-  // "en-US". This should not include a script tag (e.g. use
+  // Required. The language (and potentially also the region) of the voice
+  // expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
+  // language tag, e.g. "en-US". This should not include a script tag (e.g. use
   // "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
   // from the input provided in the SynthesisInput.  The TTS service
   // will use this parameter to help choose an appropriate voice.  Note that
@@ -277,9 +281,8 @@ message AudioConfig {
 
 // Description of the custom voice to be synthesized.
 message CustomVoiceParams {
-  // The usage of the synthesized audio. You must report your honest and
-  // correct usage of the service as it's regulated by contract and will cause
-  // significant difference in billing.
+  // Deprecated. The usage of the synthesized audio. Usage does not affect
+  // billing.
   enum ReportedUsage {
     // Request with reported usage unspecified will be rejected.
     REPORTED_USAGE_UNSPECIFIED = 0;
@@ -297,13 +300,12 @@ message CustomVoiceParams {
   // Required. The name of the AutoML model that synthesizes the custom voice.
   string model = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "automl.googleapis.com/Model"
-    }
+    (google.api.resource_reference) = { type: "automl.googleapis.com/Model" }
   ];
 
-  // Optional. The usage of the synthesized audio to be reported.
-  ReportedUsage reported_usage = 3 [(google.api.field_behavior) = OPTIONAL];
+  // Optional. Deprecated. The usage of the synthesized audio to be reported.
+  ReportedUsage reported_usage = 3
+      [deprecated = true, (google.api.field_behavior) = OPTIONAL];
 }
 
 // The message returned to the client by the `SynthesizeSpeech` method.
diff --git a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto
index c68a1a2ac319..f159ae4f4b0b 100644
--- a/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto
+++ b/java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/proto/google/cloud/texttospeech/v1beta1/cloud_tts_lrs.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -42,12 +42,12 @@ service TextToSpeechLongAudioSynthesize {
   rpc SynthesizeLongAudio(SynthesizeLongAudioRequest)
       returns (google.longrunning.Operation) {
     option (google.api.http) = {
-      post: "/v1beta1/{parent=projects/*/locations/*/voices/*}:SynthesizeLongAudio"
+      post: "/v1beta1/{parent=projects/*/locations/*}:synthesizeLongAudio"
       body: "*"
     };
     option (google.longrunning.operation_info) = {
-      response_type: "SynthesizeLongAudioResponse"
-      metadata_type: "SynthesizeLongAudioMetadata"
+      response_type: "google.cloud.texttospeech.v1beta1.SynthesizeLongAudioResponse"
+      metadata_type: "google.cloud.texttospeech.v1beta1.SynthesizeLongAudioMetadata"
     };
   }
 }
@@ -83,8 +83,8 @@ message SynthesizeLongAudioMetadata {
   // Time when the request was received.
   google.protobuf.Timestamp start_time = 1;
 
-  // Time of the most recent processing update.
-  google.protobuf.Timestamp last_update_time = 2;
+  // Deprecated. Do not use.
+  google.protobuf.Timestamp last_update_time = 2 [deprecated = true];
 
   // The progress of the most recent processing update in percentage, ie. 70.0%.
   double progress_percentage = 3;