diff --git a/google-cloud-build/src/test/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClientTest.java b/google-cloud-build/src/test/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClientTest.java
index db7f7328..85620812 100644
--- a/google-cloud-build/src/test/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClientTest.java
+++ b/google-cloud-build/src/test/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClientTest.java
@@ -565,7 +565,6 @@ public void createBuildTriggerTest() throws Exception {
             .addAllIgnoredFiles(new ArrayList<String>())
             .addAllIncludedFiles(new ArrayList<String>())
             .setFilter("filter-1274492040")
-            .setServiceAccount("serviceAccount1079137720")
             .build();
     mockCloudBuild.addResponse(expectedResponse);
 
@@ -621,7 +620,6 @@ public void getBuildTriggerTest() throws Exception {
             .addAllIgnoredFiles(new ArrayList<String>())
             .addAllIncludedFiles(new ArrayList<String>())
             .setFilter("filter-1274492040")
-            .setServiceAccount("serviceAccount1079137720")
             .build();
     mockCloudBuild.addResponse(expectedResponse);
 
@@ -758,7 +756,6 @@ public void updateBuildTriggerTest() throws Exception {
             .addAllIgnoredFiles(new ArrayList<String>())
             .addAllIncludedFiles(new ArrayList<String>())
             .setFilter("filter-1274492040")
-            .setServiceAccount("serviceAccount1079137720")
             .build();
     mockCloudBuild.addResponse(expectedResponse);
 
diff --git a/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTrigger.java b/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTrigger.java
index 5ea267fb..0998b5a8 100644
--- a/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTrigger.java
+++ b/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTrigger.java
@@ -47,7 +47,6 @@ private BuildTrigger() {
     ignoredFiles_ = com.google.protobuf.LazyStringArrayList.EMPTY;
     includedFiles_ = com.google.protobuf.LazyStringArrayList.EMPTY;
     filter_ = "";
-    serviceAccount_ = "";
   }
 
   @java.lang.Override
@@ -265,13 +264,6 @@ private BuildTrigger(
                 webhookConfig_ = subBuilder.buildPartial();
               }
 
-              break;
-            }
-          case 266:
-            {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              serviceAccount_ = s;
               break;
             }
           case 274:
@@ -1432,63 +1424,6 @@ public com.google.protobuf.ByteString getFilterBytes() {
     }
   }
 
-  public static final int SERVICE_ACCOUNT_FIELD_NUMBER = 33;
-  private volatile java.lang.Object serviceAccount_;
-  /**
-   *
-   *
-   * <pre>
-   * The service account used for all user-controlled operations including
-   * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-   * If no service account is set, then the standard Cloud Build service account
-   * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-   * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-   * </pre>
-   *
-   * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-   *
-   * @return The serviceAccount.
-   */
-  @java.lang.Override
-  public java.lang.String getServiceAccount() {
-    java.lang.Object ref = serviceAccount_;
-    if (ref instanceof java.lang.String) {
-      return (java.lang.String) ref;
-    } else {
-      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-      java.lang.String s = bs.toStringUtf8();
-      serviceAccount_ = s;
-      return s;
-    }
-  }
-  /**
-   *
-   *
-   * <pre>
-   * The service account used for all user-controlled operations including
-   * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-   * If no service account is set, then the standard Cloud Build service account
-   * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-   * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-   * </pre>
-   *
-   * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-   *
-   * @return The bytes for serviceAccount.
-   */
-  @java.lang.Override
-  public com.google.protobuf.ByteString getServiceAccountBytes() {
-    java.lang.Object ref = serviceAccount_;
-    if (ref instanceof java.lang.String) {
-      com.google.protobuf.ByteString b =
-          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-      serviceAccount_ = b;
-      return b;
-    } else {
-      return (com.google.protobuf.ByteString) ref;
-    }
-  }
-
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -1553,9 +1488,6 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (webhookConfig_ != null) {
       output.writeMessage(31, getWebhookConfig());
     }
-    if (!getServiceAccountBytes().isEmpty()) {
-      com.google.protobuf.GeneratedMessageV3.writeString(output, 33, serviceAccount_);
-    }
     if (!getResourceNameBytes().isEmpty()) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 34, resourceName_);
     }
@@ -1645,9 +1577,6 @@ public int getSerializedSize() {
     if (webhookConfig_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(31, getWebhookConfig());
     }
-    if (!getServiceAccountBytes().isEmpty()) {
-      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(33, serviceAccount_);
-    }
     if (!getResourceNameBytes().isEmpty()) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(34, resourceName_);
     }
@@ -1696,7 +1625,6 @@ public boolean equals(final java.lang.Object obj) {
     if (!getIgnoredFilesList().equals(other.getIgnoredFilesList())) return false;
     if (!getIncludedFilesList().equals(other.getIncludedFilesList())) return false;
     if (!getFilter().equals(other.getFilter())) return false;
-    if (!getServiceAccount().equals(other.getServiceAccount())) return false;
     if (!getBuildTemplateCase().equals(other.getBuildTemplateCase())) return false;
     switch (buildTemplateCase_) {
       case 18:
@@ -1770,8 +1698,6 @@ public int hashCode() {
     }
     hash = (37 * hash) + FILTER_FIELD_NUMBER;
     hash = (53 * hash) + getFilter().hashCode();
-    hash = (37 * hash) + SERVICE_ACCOUNT_FIELD_NUMBER;
-    hash = (53 * hash) + getServiceAccount().hashCode();
     switch (buildTemplateCase_) {
       case 18:
         hash = (37 * hash) + AUTODETECT_FIELD_NUMBER;
@@ -2002,8 +1928,6 @@ public Builder clear() {
       bitField0_ = (bitField0_ & ~0x00000008);
       filter_ = "";
 
-      serviceAccount_ = "";
-
       buildTemplateCase_ = 0;
       buildTemplate_ = null;
       return this;
@@ -2095,7 +2019,6 @@ public com.google.cloudbuild.v1.BuildTrigger buildPartial() {
       }
       result.includedFiles_ = includedFiles_;
       result.filter_ = filter_;
-      result.serviceAccount_ = serviceAccount_;
       result.buildTemplateCase_ = buildTemplateCase_;
       onBuilt();
       return result;
@@ -2215,10 +2138,6 @@ public Builder mergeFrom(com.google.cloudbuild.v1.BuildTrigger other) {
         filter_ = other.filter_;
         onChanged();
       }
-      if (!other.getServiceAccount().isEmpty()) {
-        serviceAccount_ = other.serviceAccount_;
-        onChanged();
-      }
       switch (other.getBuildTemplateCase()) {
         case AUTODETECT:
           {
@@ -5131,132 +5050,6 @@ public Builder setFilterBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
-    private java.lang.Object serviceAccount_ = "";
-    /**
-     *
-     *
-     * <pre>
-     * The service account used for all user-controlled operations including
-     * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-     * If no service account is set, then the standard Cloud Build service account
-     * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-     * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-     * </pre>
-     *
-     * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-     *
-     * @return The serviceAccount.
-     */
-    public java.lang.String getServiceAccount() {
-      java.lang.Object ref = serviceAccount_;
-      if (!(ref instanceof java.lang.String)) {
-        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        serviceAccount_ = s;
-        return s;
-      } else {
-        return (java.lang.String) ref;
-      }
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The service account used for all user-controlled operations including
-     * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-     * If no service account is set, then the standard Cloud Build service account
-     * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-     * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-     * </pre>
-     *
-     * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-     *
-     * @return The bytes for serviceAccount.
-     */
-    public com.google.protobuf.ByteString getServiceAccountBytes() {
-      java.lang.Object ref = serviceAccount_;
-      if (ref instanceof String) {
-        com.google.protobuf.ByteString b =
-            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-        serviceAccount_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The service account used for all user-controlled operations including
-     * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-     * If no service account is set, then the standard Cloud Build service account
-     * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-     * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-     * </pre>
-     *
-     * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-     *
-     * @param value The serviceAccount to set.
-     * @return This builder for chaining.
-     */
-    public Builder setServiceAccount(java.lang.String value) {
-      if (value == null) {
-        throw new NullPointerException();
-      }
-
-      serviceAccount_ = value;
-      onChanged();
-      return this;
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The service account used for all user-controlled operations including
-     * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-     * If no service account is set, then the standard Cloud Build service account
-     * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-     * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-     * </pre>
-     *
-     * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-     *
-     * @return This builder for chaining.
-     */
-    public Builder clearServiceAccount() {
-
-      serviceAccount_ = getDefaultInstance().getServiceAccount();
-      onChanged();
-      return this;
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The service account used for all user-controlled operations including
-     * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-     * If no service account is set, then the standard Cloud Build service account
-     * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-     * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-     * </pre>
-     *
-     * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-     *
-     * @param value The bytes for serviceAccount to set.
-     * @return This builder for chaining.
-     */
-    public Builder setServiceAccountBytes(com.google.protobuf.ByteString value) {
-      if (value == null) {
-        throw new NullPointerException();
-      }
-      checkByteStringIsUtf8(value);
-
-      serviceAccount_ = value;
-      onChanged();
-      return this;
-    }
-
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerOrBuilder.java b/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerOrBuilder.java
index 18561d17..1560da45 100644
--- a/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerOrBuilder.java
+++ b/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerOrBuilder.java
@@ -747,38 +747,5 @@ public interface BuildTriggerOrBuilder
    */
   com.google.protobuf.ByteString getFilterBytes();
 
-  /**
-   *
-   *
-   * <pre>
-   * The service account used for all user-controlled operations including
-   * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-   * If no service account is set, then the standard Cloud Build service account
-   * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-   * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-   * </pre>
-   *
-   * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-   *
-   * @return The serviceAccount.
-   */
-  java.lang.String getServiceAccount();
-  /**
-   *
-   *
-   * <pre>
-   * The service account used for all user-controlled operations including
-   * UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-   * If no service account is set, then the standard Cloud Build service account
-   * ([PROJECT_NUM]&#64;system.gserviceaccount.com) will be used instead.
-   * Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-   * </pre>
-   *
-   * <code>string service_account = 33 [(.google.api.resource_reference) = { ... }</code>
-   *
-   * @return The bytes for serviceAccount.
-   */
-  com.google.protobuf.ByteString getServiceAccountBytes();
-
   public com.google.cloudbuild.v1.BuildTrigger.BuildTemplateCase getBuildTemplateCase();
 }
diff --git a/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/Cloudbuild.java b/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/Cloudbuild.java
index ed1609e7..b660e4dd 100644
--- a/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/Cloudbuild.java
+++ b/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/Cloudbuild.java
@@ -513,7 +513,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + ".cloudbuild.v1.ApprovalResult.DecisionB\003"
           + "\340A\002\022\024\n\007comment\030\005 \001(\tB\003\340A\001\022\020\n\003url\030\006 \001(\tB\003"
           + "\340A\001\"@\n\010Decision\022\030\n\024DECISION_UNSPECIFIED\020"
-          + "\000\022\014\n\010APPROVED\020\001\022\014\n\010REJECTED\020\002\"\353\007\n\014BuildT"
+          + "\000\022\014\n\010APPROVED\020\001\022\014\n\010REJECTED\020\002\"\252\007\n\014BuildT"
           + "rigger\022\025\n\rresource_name\030\" \001(\t\022\017\n\002id\030\001 \001("
           + "\tB\003\340A\003\022\023\n\013description\030\n \001(\t\022\014\n\004name\030\025 \001("
           + "\t\022\014\n\004tags\030\023 \003(\t\022C\n\020trigger_template\030\007 \001("
@@ -531,304 +531,303 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\0132>.google.devtools.cloudbuild.v1.BuildT"
           + "rigger.SubstitutionsEntry\022\025\n\rignored_fil"
           + "es\030\017 \003(\t\022\026\n\016included_files\030\020 \003(\t\022\023\n\006filt"
-          + "er\030\036 \001(\tB\003\340A\001\022?\n\017service_account\030! \001(\tB&"
-          + "\372A#\n!iam.googleapis.com/ServiceAccount\0324"
-          + "\n\022SubstitutionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005val"
-          + "ue\030\002 \001(\t:\0028\001:\242\001\352A\236\001\n&cloudbuild.googleap"
-          + "is.com/BuildTrigger\022%projects/{project}/"
-          + "triggers/{trigger}\022:projects/{project}/l"
-          + "ocations/{location}/triggers/{trigger}*\010"
-          + "triggers2\007triggerB\020\n\016build_template\"\334\001\n\022"
-          + "GitHubEventsConfig\022\033\n\017installation_id\030\001 "
-          + "\001(\003B\002\030\001\022\r\n\005owner\030\006 \001(\t\022\014\n\004name\030\007 \001(\t\022H\n\014"
-          + "pull_request\030\004 \001(\01320.google.devtools.clo"
-          + "udbuild.v1.PullRequestFilterH\000\0229\n\004push\030\005"
-          + " \001(\0132).google.devtools.cloudbuild.v1.Pus"
-          + "hFilterH\000B\007\n\005event\"\377\002\n\014PubsubConfig\022@\n\014s"
-          + "ubscription\030\001 \001(\tB*\340A\003\372A$\n\"pubsub.google"
-          + "apis.com/Subscription\022/\n\005topic\030\002 \001(\tB \372A"
-          + "\035\n\033pubsub.googleapis.com/Topic\022E\n\025servic"
-          + "e_account_email\030\003 \001(\tB&\372A#\n!iam.googleap"
-          + "is.com/ServiceAccount\022@\n\005state\030\004 \001(\01621.g"
-          + "oogle.devtools.cloudbuild.v1.PubsubConfi"
-          + "g.State\"s\n\005State\022\025\n\021STATE_UNSPECIFIED\020\000\022"
-          + "\006\n\002OK\020\001\022\030\n\024SUBSCRIPTION_DELETED\020\002\022\021\n\rTOP"
-          + "IC_DELETED\020\003\022\036\n\032SUBSCRIPTION_MISCONFIGUR"
-          + "ED\020\004\"\343\001\n\rWebhookConfig\022D\n\006secret\030\003 \001(\tB2"
-          + "\340A\002\372A,\n*secretmanager.googleapis.com/Sec"
-          + "retVersionH\000\022A\n\005state\030\004 \001(\01622.google.dev"
-          + "tools.cloudbuild.v1.WebhookConfig.State\""
-          + ":\n\005State\022\025\n\021STATE_UNSPECIFIED\020\000\022\006\n\002OK\020\001\022"
-          + "\022\n\016SECRET_DELETED\020\002B\r\n\013auth_method\"\224\002\n\021P"
-          + "ullRequestFilter\022\020\n\006branch\030\002 \001(\tH\000\022X\n\017co"
-          + "mment_control\030\005 \001(\0162?.google.devtools.cl"
-          + "oudbuild.v1.PullRequestFilter.CommentCon"
-          + "trol\022\024\n\014invert_regex\030\006 \001(\010\"r\n\016CommentCon"
-          + "trol\022\025\n\021COMMENTS_DISABLED\020\000\022\024\n\020COMMENTS_"
-          + "ENABLED\020\001\0223\n/COMMENTS_ENABLED_FOR_EXTERN"
-          + "AL_CONTRIBUTORS_ONLY\020\002B\t\n\007git_ref\"N\n\nPus"
-          + "hFilter\022\020\n\006branch\030\002 \001(\tH\000\022\r\n\003tag\030\003 \001(\tH\000"
-          + "\022\024\n\014invert_regex\030\004 \001(\010B\t\n\007git_ref\"\264\001\n\031Cr"
-          + "eateBuildTriggerRequest\022;\n\006parent\030\003 \001(\tB"
-          + "+\372A(\022&cloudbuild.googleapis.com/BuildTri"
-          + "gger\022\027\n\nproject_id\030\001 \001(\tB\003\340A\002\022A\n\007trigger"
-          + "\030\002 \001(\0132+.google.devtools.cloudbuild.v1.B"
-          + "uildTriggerB\003\340A\002\"\205\001\n\026GetBuildTriggerRequ"
-          + "est\0229\n\004name\030\003 \001(\tB+\372A(\n&cloudbuild.googl"
-          + "eapis.com/BuildTrigger\022\027\n\nproject_id\030\001 \001"
-          + "(\tB\003\340A\002\022\027\n\ntrigger_id\030\002 \001(\tB\003\340A\002\"\227\001\n\030Lis"
-          + "tBuildTriggersRequest\022;\n\006parent\030\004 \001(\tB+\372"
-          + "A(\022&cloudbuild.googleapis.com/BuildTrigg"
-          + "er\022\027\n\nproject_id\030\001 \001(\tB\003\340A\002\022\021\n\tpage_size"
-          + "\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\"s\n\031ListBuildT"
-          + "riggersResponse\022=\n\010triggers\030\001 \003(\0132+.goog"
-          + "le.devtools.cloudbuild.v1.BuildTrigger\022\027"
-          + "\n\017next_page_token\030\002 \001(\t\"\210\001\n\031DeleteBuildT"
-          + "riggerRequest\0229\n\004name\030\003 \001(\tB+\372A(\n&cloudb"
-          + "uild.googleapis.com/BuildTrigger\022\027\n\nproj"
-          + "ect_id\030\001 \001(\tB\003\340A\002\022\027\n\ntrigger_id\030\002 \001(\tB\003\340"
-          + "A\002\"\220\001\n\031UpdateBuildTriggerRequest\022\027\n\nproj"
-          + "ect_id\030\001 \001(\tB\003\340A\002\022\027\n\ntrigger_id\030\002 \001(\tB\003\340"
-          + "A\002\022A\n\007trigger\030\003 \001(\0132+.google.devtools.cl"
-          + "oudbuild.v1.BuildTriggerB\003\340A\002\"\334\t\n\014BuildO"
-          + "ptions\022L\n\026source_provenance_hash\030\001 \003(\0162,"
-          + ".google.devtools.cloudbuild.v1.Hash.Hash"
-          + "Type\022Y\n\027requested_verify_option\030\002 \001(\01628."
-          + "google.devtools.cloudbuild.v1.BuildOptio"
-          + "ns.VerifyOption\022M\n\014machine_type\030\003 \001(\01627."
-          + "google.devtools.cloudbuild.v1.BuildOptio"
-          + "ns.MachineType\022\024\n\014disk_size_gb\030\006 \001(\003\022[\n\023"
-          + "substitution_option\030\004 \001(\0162>.google.devto"
-          + "ols.cloudbuild.v1.BuildOptions.Substitut"
-          + "ionOption\022\035\n\025dynamic_substitutions\030\021 \001(\010"
-          + "\022\\\n\024log_streaming_option\030\005 \001(\0162>.google."
-          + "devtools.cloudbuild.v1.BuildOptions.LogS"
-          + "treamingOption\022\027\n\013worker_pool\030\007 \001(\tB\002\030\001\022"
-          + "I\n\004pool\030\023 \001(\01326.google.devtools.cloudbui"
-          + "ld.v1.BuildOptions.PoolOptionB\003\340A\001\022H\n\007lo"
-          + "gging\030\013 \001(\01627.google.devtools.cloudbuild"
-          + ".v1.BuildOptions.LoggingMode\022\013\n\003env\030\014 \003("
-          + "\t\022\022\n\nsecret_env\030\r \003(\t\0226\n\007volumes\030\016 \003(\0132%"
-          + ".google.devtools.cloudbuild.v1.Volume\032E\n"
-          + "\nPoolOption\0227\n\004name\030\001 \001(\tB)\372A&\n$cloudbui"
-          + "ld.googleapis.com/WorkerPool\".\n\014VerifyOp"
-          + "tion\022\020\n\014NOT_VERIFIED\020\000\022\014\n\010VERIFIED\020\001\"h\n\013"
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+          + "ld.v1.Volume\032E\n\nPoolOption\0227\n\004name\030\001 \001(\t"
+          + "B)\372A&\n$cloudbuild.googleapis.com/WorkerP"
+          + "ool\".\n\014VerifyOption\022\020\n\014NOT_VERIFIED\020\000\022\014\n"
+          + "\010VERIFIED\020\001\"h\n\013MachineType\022\017\n\013UNSPECIFIE"
+          + "D\020\000\022\020\n\014N1_HIGHCPU_8\020\001\022\021\n\rN1_HIGHCPU_32\020\002"
+          + "\022\020\n\014E2_HIGHCPU_8\020\005\022\021\n\rE2_HIGHCPU_32\020\006\"5\n"
+          + "\022SubstitutionOption\022\016\n\nMUST_MATCH\020\000\022\017\n\013A"
+          + "LLOW_LOOSE\020\001\"G\n\022LogStreamingOption\022\022\n\016ST"
+          + "REAM_DEFAULT\020\000\022\r\n\tSTREAM_ON\020\001\022\016\n\nSTREAM_"
+          + "OFF\020\002\"|\n\013LoggingMode\022\027\n\023LOGGING_UNSPECIF"
+          + "IED\020\000\022\n\n\006LEGACY\020\001\022\014\n\010GCS_ONLY\020\002\022\030\n\020STACK"
+          + "DRIVER_ONLY\020\003\032\002\010\001\022\026\n\022CLOUD_LOGGING_ONLY\020"
+          + "\005\022\010\n\004NONE\020\004\"\205\001\n\034ReceiveTriggerWebhookReq"
+          + "uest\022\014\n\004name\030\005 \001(\t\022\"\n\004body\030\001 \001(\0132\024.googl"
+          + "e.api.HttpBody\022\022\n\nproject_id\030\002 \001(\t\022\017\n\007tr"
+          + "igger\030\003 \001(\t\022\016\n\006secret\030\004 \001(\t\"\037\n\035ReceiveTr"
+          + "iggerWebhookResponse\"\210\006\n\nWorkerPool\022\021\n\004n"
+          + "ame\030\001 \001(\tB\003\340A\003\022\024\n\014display_name\030\002 \001(\t\022\020\n\003"
+          + "uid\030\003 \001(\tB\003\340A\003\022O\n\013annotations\030\004 \003(\0132:.go"
+          + "ogle.devtools.cloudbuild.v1.WorkerPool.A"
+          + "nnotationsEntry\0224\n\013create_time\030\005 \001(\0132\032.g"
+          + "oogle.protobuf.TimestampB\003\340A\003\0224\n\013update_"
+          + "time\030\006 \001(\0132\032.google.protobuf.TimestampB\003"
+          + "\340A\003\0224\n\013delete_time\030\007 \001(\0132\032.google.protob"
+          + "uf.TimestampB\003\340A\003\022C\n\005state\030\010 \001(\0162/.googl"
+          + "e.devtools.cloudbuild.v1.WorkerPool.Stat"
+          + "eB\003\340A\003\022T\n\026private_pool_v1_config\030\014 \001(\01322"
+          + ".google.devtools.cloudbuild.v1.PrivatePo"
+          + "olV1ConfigH\000\022\021\n\004etag\030\013 \001(\tB\003\340A\003\0322\n\020Annot"
+          + "ationsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:"
+          + "\0028\001\"T\n\005State\022\025\n\021STATE_UNSPECIFIED\020\000\022\014\n\010C"
+          + "REATING\020\001\022\013\n\007RUNNING\020\002\022\014\n\010DELETING\020\003\022\013\n\007"
+          + "DELETED\020\004:\211\001\352A\205\001\n$cloudbuild.googleapis."
+          + "com/WorkerPool\022Aprojects/{project}/locat"
+          + "ions/{location}/workerPools/{worker_pool"
+          + "}*\013workerPools2\nworkerPoolR\001\001B\010\n\006config\""
+          + "\226\004\n\023PrivatePoolV1Config\022V\n\rworker_config"
+          + "\030\001 \001(\0132?.google.devtools.cloudbuild.v1.P"
+          + "rivatePoolV1Config.WorkerConfig\022X\n\016netwo"
+          + "rk_config\030\002 \001(\0132@.google.devtools.cloudb"
+          + "uild.v1.PrivatePoolV1Config.NetworkConfi"
+          + "g\032:\n\014WorkerConfig\022\024\n\014machine_type\030\001 \001(\t\022"
+          + "\024\n\014disk_size_gb\030\002 \001(\003\032\220\002\n\rNetworkConfig\022"
+          + "A\n\016peered_network\030\001 \001(\tB)\340A\005\340A\002\372A \n\036comp"
+          + "ute.googleapis.com/Network\022d\n\regress_opt"
+          + "ion\030\002 \001(\0162M.google.devtools.cloudbuild.v"
+          + "1.PrivatePoolV1Config.NetworkConfig.Egre"
+          + "ssOption\"V\n\014EgressOption\022\035\n\031EGRESS_OPTIO"
+          + "N_UNSPECIFIED\020\000\022\024\n\020NO_PUBLIC_EGRESS\020\001\022\021\n"
+          + "\rPUBLIC_EGRESS\020\002\"\320\001\n\027CreateWorkerPoolReq"
+          + "uest\0229\n\006parent\030\001 \001(\tB)\340A\002\372A#\n!locations."
+          + "googleapis.com/Location\022C\n\013worker_pool\030\002"
+          + " \001(\0132).google.devtools.cloudbuild.v1.Wor"
+          + "kerPoolB\003\340A\002\022\036\n\016worker_pool_id\030\003 \001(\tB\006\340A"
+          + "\005\340A\002\022\025\n\rvalidate_only\030\004 \001(\010\"R\n\024GetWorker"
+          + "PoolRequest\022:\n\004name\030\001 \001(\tB,\340A\002\372A&\n$cloud"
+          + "build.googleapis.com/WorkerPool\"\221\001\n\027Dele"
+          + "teWorkerPoolRequest\022:\n\004name\030\001 \001(\tB,\340A\002\372A"
+          + "&\n$cloudbuild.googleapis.com/WorkerPool\022"
+          + "\014\n\004etag\030\002 \001(\t\022\025\n\rallow_missing\030\003 \001(\010\022\025\n\r"
+          + "validate_only\030\004 \001(\010\"\246\001\n\027UpdateWorkerPool"
+          + "Request\022C\n\013worker_pool\030\001 \001(\0132).google.de"
+          + "vtools.cloudbuild.v1.WorkerPoolB\003\340A\002\022/\n\013"
+          + "update_mask\030\002 \001(\0132\032.google.protobuf.Fiel"
+          + "dMask\022\025\n\rvalidate_only\030\004 \001(\010\"z\n\026ListWork"
+          + "erPoolsRequest\0229\n\006parent\030\001 \001(\tB)\340A\002\372A#\n!"
+          + "locations.googleapis.com/Location\022\021\n\tpag"
+          + "e_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\"s\n\027List"
+          + "WorkerPoolsResponse\022?\n\014worker_pools\030\001 \003("
+          + "\0132).google.devtools.cloudbuild.v1.Worker"
+          + "Pool\022\027\n\017next_page_token\030\002 \001(\t\"\307\001\n!Create"
+          + "WorkerPoolOperationMetadata\022>\n\013worker_po"
+          + "ol\030\001 \001(\tB)\372A&\n$cloudbuild.googleapis.com"
+          + "/WorkerPool\022/\n\013create_time\030\002 \001(\0132\032.googl"
+          + "e.protobuf.Timestamp\0221\n\rcomplete_time\030\003 "
+          + "\001(\0132\032.google.protobuf.Timestamp\"\307\001\n!Upda"
+          + "teWorkerPoolOperationMetadata\022>\n\013worker_"
+          + "pool\030\001 \001(\tB)\372A&\n$cloudbuild.googleapis.c"
+          + "om/WorkerPool\022/\n\013create_time\030\002 \001(\0132\032.goo"
+          + "gle.protobuf.Timestamp\0221\n\rcomplete_time\030"
+          + "\003 \001(\0132\032.google.protobuf.Timestamp\"\307\001\n!De"
+          + "leteWorkerPoolOperationMetadata\022>\n\013worke"
+          + "r_pool\030\001 \001(\tB)\372A&\n$cloudbuild.googleapis"
+          + ".com/WorkerPool\022/\n\013create_time\030\002 \001(\0132\032.g"
+          + "oogle.protobuf.Timestamp\0221\n\rcomplete_tim"
+          + "e\030\003 \001(\0132\032.google.protobuf.Timestamp2\266#\n\n"
+          + "CloudBuild\022\373\001\n\013CreateBuild\0221.google.devt"
+          + "ools.cloudbuild.v1.CreateBuildRequest\032\035."
+          + "google.longrunning.Operation\"\231\001\202\323\344\223\002^\" /"
+          + "v1/projects/{project_id}/builds:\005buildZ3"
+          + "\"*/v1/{parent=projects/*/locations/*}/bu"
+          + "ilds:\005build\332A\020project_id,build\312A\037\n\005Build"
+          + "\022\026BuildOperationMetadata\022\315\001\n\010GetBuild\022.."
+          + "google.devtools.cloudbuild.v1.GetBuildRe"
+          + "quest\032$.google.devtools.cloudbuild.v1.Bu"
+          + "ild\"k\202\323\344\223\002U\022%/v1/projects/{project_id}/b"
+          + "uilds/{id}Z,\022*/v1/{name=projects/*/locat"
+          + "ions/*/builds/*}\332A\rproject_id,id\022\335\001\n\nLis"
+          + "tBuilds\0220.google.devtools.cloudbuild.v1."
+          + "ListBuildsRequest\0321.google.devtools.clou"
+          + "dbuild.v1.ListBuildsResponse\"j\202\323\344\223\002P\022 /v"
+          + "1/projects/{project_id}/buildsZ,\022*/v1/{p"
+          + "arent=projects/*/locations/*}/builds\332A\021p"
+          + "roject_id,filter\022\347\001\n\013CancelBuild\0221.googl"
+          + "e.devtools.cloudbuild.v1.CancelBuildRequ"
+          + "est\032$.google.devtools.cloudbuild.v1.Buil"
+          + "d\"\177\202\323\344\223\002i\",/v1/projects/{project_id}/bui"
+          + "lds/{id}:cancel:\001*Z6\"1/v1/{name=projects"
+          + "/*/locations/*/builds/*}:cancel:\001*\332A\rpro"
+          + "ject_id,id\022\377\001\n\nRetryBuild\0220.google.devto"
+          + "ols.cloudbuild.v1.RetryBuildRequest\032\035.go"
+          + "ogle.longrunning.Operation\"\237\001\202\323\344\223\002g\"+/v1",
+      "/projects/{project_id}/builds/{id}:retry"
+          + ":\001*Z5\"0/v1/{name=projects/*/locations/*/"
+          + "builds/*}:retry:\001*\332A\rproject_id,id\312A\037\n\005B"
+          + "uild\022\026BuildOperationMetadata\022\207\002\n\014Approve"
+          + "Build\0222.google.devtools.cloudbuild.v1.Ap"
+          + "proveBuildRequest\032\035.google.longrunning.O"
+          + "peration\"\243\001\202\323\344\223\002d\"&/v1/{name=projects/*/"
+          + "builds/*}:approve:\001*Z7\"2/v1/{name=projec"
+          + "ts/*/locations/*/builds/*}:approve:\001*\332A\024"
+          + "name,approval_result\312A\037\n\005Build\022\026BuildOpe"
+          + "rationMetadata\022\377\001\n\022CreateBuildTrigger\0228."
+          + "google.devtools.cloudbuild.v1.CreateBuil"
+          + "dTriggerRequest\032+.google.devtools.cloudb"
+          + "uild.v1.BuildTrigger\"\201\001\202\323\344\223\002f\"\"/v1/proje"
+          + "cts/{project_id}/triggers:\007triggerZ7\",/v"
+          + "1/{parent=projects/*/locations/*}/trigge"
+          + "rs:\007trigger\332A\022project_id,trigger\022\366\001\n\017Get"
+          + "BuildTrigger\0225.google.devtools.cloudbuil"
+          + "d.v1.GetBuildTriggerRequest\032+.google.dev"
+          + "tools.cloudbuild.v1.BuildTrigger\"\177\202\323\344\223\002a"
+          + "\022//v1/projects/{project_id}/triggers/{tr"
+          + "igger_id}Z.\022,/v1/{name=projects/*/locati"
+          + "ons/*/triggers/*}\332A\025project_id,trigger_i"
+          + "d\022\357\001\n\021ListBuildTriggers\0227.google.devtool"
+          + "s.cloudbuild.v1.ListBuildTriggersRequest"
+          + "\0328.google.devtools.cloudbuild.v1.ListBui"
+          + "ldTriggersResponse\"g\202\323\344\223\002T\022\"/v1/projects"
+          + "/{project_id}/triggersZ.\022,/v1/{parent=pr"
+          + "ojects/*/locations/*}/triggers\332A\nproject"
+          + "_id\022\347\001\n\022DeleteBuildTrigger\0228.google.devt"
+          + "ools.cloudbuild.v1.DeleteBuildTriggerReq"
+          + "uest\032\026.google.protobuf.Empty\"\177\202\323\344\223\002a*//v"
+          + "1/projects/{project_id}/triggers/{trigge"
+          + "r_id}Z.*,/v1/{name=projects/*/locations/"
+          + "*/triggers/*}\332A\025project_id,trigger_id\022\251\002"
+          + "\n\022UpdateBuildTrigger\0228.google.devtools.c"
+          + "loudbuild.v1.UpdateBuildTriggerRequest\032+"
+          + ".google.devtools.cloudbuild.v1.BuildTrig"
+          + "ger\"\253\001\202\323\344\223\002\204\0012//v1/projects/{project_id}"
+          + "/triggers/{trigger_id}:\007triggerZH2=/v1/{"
+          + "trigger.resource_name=projects/*/locatio"
+          + "ns/*/triggers/*}:\007trigger\332A\035project_id,t"
+          + "rigger_id,trigger\022\245\002\n\017RunBuildTrigger\0225."
+          + "google.devtools.cloudbuild.v1.RunBuildTr"
+          + "iggerRequest\032\035.google.longrunning.Operat"
+          + "ion\"\273\001\202\323\344\223\002t\"3/v1/projects/{project_id}/"
+          + "triggers/{trigger_id}:run:\006sourceZ5\"0/v1"
+          + "/{name=projects/*/locations/*/triggers/*"
+          + "}:run:\001*\332A\034project_id,trigger_id,source\312"
+          + "A\037\n\005Build\022\026BuildOperationMetadata\022\225\002\n\025Re"
+          + "ceiveTriggerWebhook\022;.google.devtools.cl"
+          + "oudbuild.v1.ReceiveTriggerWebhookRequest"
+          + "\032<.google.devtools.cloudbuild.v1.Receive"
+          + "TriggerWebhookResponse\"\200\001\202\323\344\223\002z\"4/v1/pro"
+          + "jects/{project_id}/triggers/{trigger}:we"
+          + "bhook:\004bodyZ<\"4/v1/{name=projects/*/loca"
+          + "tions/*/triggers/*}:webhook:\004body\022\206\002\n\020Cr"
+          + "eateWorkerPool\0226.google.devtools.cloudbu"
+          + "ild.v1.CreateWorkerPoolRequest\032\035.google."
+          + "longrunning.Operation\"\232\001\202\323\344\223\002>\"//v1/{par"
+          + "ent=projects/*/locations/*}/workerPools:"
+          + "\013worker_pool\332A!parent,worker_pool,worker"
+          + "_pool_id\312A/\n\nWorkerPool\022!CreateWorkerPoo"
+          + "lOperationMetadata\022\257\001\n\rGetWorkerPool\0223.g"
+          + "oogle.devtools.cloudbuild.v1.GetWorkerPo"
+          + "olRequest\032).google.devtools.cloudbuild.v"
+          + "1.WorkerPool\">\202\323\344\223\0021\022//v1/{name=projects"
+          + "/*/locations/*/workerPools/*}\332A\004name\022\346\001\n"
+          + "\020DeleteWorkerPool\0226.google.devtools.clou"
+          + "dbuild.v1.DeleteWorkerPoolRequest\032\035.goog"
+          + "le.longrunning.Operation\"{\202\323\344\223\0021*//v1/{n"
+          + "ame=projects/*/locations/*/workerPools/*"
+          + "}\332A\004name\312A:\n\025google.protobuf.Empty\022!Dele"
+          + "teWorkerPoolOperationMetadata\022\210\002\n\020Update"
+          + "WorkerPool\0226.google.devtools.cloudbuild."
+          + "v1.UpdateWorkerPoolRequest\032\035.google.long"
+          + "running.Operation\"\234\001\202\323\344\223\002J2;/v1/{worker_"
+          + "pool.name=projects/*/locations/*/workerP"
+          + "ools/*}:\013worker_pool\332A\027worker_pool,updat"
+          + "e_mask\312A/\n\nWorkerPool\022!UpdateWorkerPoolO"
+          + "perationMetadata\022\302\001\n\017ListWorkerPools\0225.g"
           + "oogle.devtools.cloudbuild.v1.ListWorkerP"
-          + "oolsResponse\"@\202\323\344\223\0021\022//v1/{parent=projec"
-          + "ts/*/locations/*}/workerPools\332A\006parent\032M"
-          + "\312A\031cloudbuild.googleapis.com\322A.https://w"
-          + "ww.googleapis.com/auth/cloud-platformB\222\006"
-          + "\n\030com.google.cloudbuild.v1P\001ZGgoogle.gol"
-          + "ang.org/genproto/googleapis/devtools/clo"
-          + "udbuild/v1;cloudbuild\242\002\003GCB\252\002\032Google.Clo"
-          + "ud.CloudBuild.V1\352\002\030Google::Cloud::Build:"
-          + ":V1\352AN\n\036compute.googleapis.com/Network\022,"
-          + "projects/{project}/global/networks/{netw"
-          + "ork}\352AY\n!iam.googleapis.com/ServiceAccou"
-          + "nt\0224projects/{project}/serviceAccounts/{"
-          + "service_account}\352AJ\n#secretmanager.googl"
-          + "eapis.com/Secret\022#projects/{project}/sec"
-          + "rets/{secret}\352Ad\n*secretmanager.googleap"
-          + "is.com/SecretVersion\0226projects/{project}"
-          + "/secrets/{secret}/versions/{version}\352Ap\n"
-          + "!cloudkms.googleapis.com/CryptoKey\022Kproj"
-          + "ects/{project}/locations/{location}/keyR"
-          + "ings/{keyring}/cryptoKeys/{key}\352AU\n\"pubs"
-          + "ub.googleapis.com/Subscription\022/projects"
-          + "/{project}/subscriptions/{subscription}\352"
-          + "A@\n\033pubsub.googleapis.com/Topic\022!project"
-          + "s/{project}/topics/{topic}b\006proto3"
+          + "oolsRequest\0326.google.devtools.cloudbuild"
+          + ".v1.ListWorkerPoolsResponse\"@\202\323\344\223\0021\022//v1"
+          + "/{parent=projects/*/locations/*}/workerP"
+          + "ools\332A\006parent\032M\312A\031cloudbuild.googleapis."
+          + "com\322A.https://www.googleapis.com/auth/cl"
+          + "oud-platformB\222\006\n\030com.google.cloudbuild.v"
+          + "1P\001ZGgoogle.golang.org/genproto/googleap"
+          + "is/devtools/cloudbuild/v1;cloudbuild\242\002\003G"
+          + "CB\252\002\032Google.Cloud.CloudBuild.V1\352\002\030Google"
+          + "::Cloud::Build::V1\352AN\n\036compute.googleapi"
+          + "s.com/Network\022,projects/{project}/global"
+          + "/networks/{network}\352AY\n!iam.googleapis.c"
+          + "om/ServiceAccount\0224projects/{project}/se"
+          + "rviceAccounts/{service_account}\352AJ\n#secr"
+          + "etmanager.googleapis.com/Secret\022#project"
+          + "s/{project}/secrets/{secret}\352Ad\n*secretm"
+          + "anager.googleapis.com/SecretVersion\0226pro"
+          + "jects/{project}/secrets/{secret}/version"
+          + "s/{version}\352Ap\n!cloudkms.googleapis.com/"
+          + "CryptoKey\022Kprojects/{project}/locations/"
+          + "{location}/keyRings/{keyring}/cryptoKeys"
+          + "/{key}\352AU\n\"pubsub.googleapis.com/Subscri"
+          + "ption\022/projects/{project}/subscriptions/"
+          + "{subscription}\352A@\n\033pubsub.googleapis.com"
+          + "/Topic\022!projects/{project}/topics/{topic"
+          + "}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -1250,7 +1249,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "IgnoredFiles",
               "IncludedFiles",
               "Filter",
-              "ServiceAccount",
               "BuildTemplate",
             });
     internal_static_google_devtools_cloudbuild_v1_BuildTrigger_SubstitutionsEntry_descriptor =
diff --git a/proto-google-cloud-build-v1/src/main/proto/google/devtools/cloudbuild/v1/cloudbuild.proto b/proto-google-cloud-build-v1/src/main/proto/google/devtools/cloudbuild/v1/cloudbuild.proto
index 3f980c7b..9b23d2c0 100644
--- a/proto-google-cloud-build-v1/src/main/proto/google/devtools/cloudbuild/v1/cloudbuild.proto
+++ b/proto-google-cloud-build-v1/src/main/proto/google/devtools/cloudbuild/v1/cloudbuild.proto
@@ -1377,15 +1377,6 @@ message BuildTrigger {
 
   // Optional. A Common Expression Language string.
   string filter = 30 [(google.api.field_behavior) = OPTIONAL];
-
-  // The service account used for all user-controlled operations including
-  // UpdateBuildTrigger, RunBuildTrigger, CreateBuild, and CancelBuild.
-  // If no service account is set, then the standard Cloud Build service account
-  // ([PROJECT_NUM]@system.gserviceaccount.com) will be used instead.
-  // Format: `projects/{PROJECT_ID}/serviceAccounts/{ACCOUNT_ID_OR_EMAIL}`
-  string service_account = 33 [(google.api.resource_reference) = {
-    type: "iam.googleapis.com/ServiceAccount"
-  }];
 }
 
 // GitHubEventsConfig describes the configuration of a trigger that creates a