diff --git a/Kms/metadata/V1/AutokeyAdmin.php b/Kms/metadata/V1/AutokeyAdmin.php
index 947aaed125ac..25deea6f10b4 100644
Binary files a/Kms/metadata/V1/AutokeyAdmin.php and b/Kms/metadata/V1/AutokeyAdmin.php differ
diff --git a/Kms/src/V1/AutokeyConfig.php b/Kms/src/V1/AutokeyConfig.php
index 4473493d8774..0b671f387ee1 100644
--- a/Kms/src/V1/AutokeyConfig.php
+++ b/Kms/src/V1/AutokeyConfig.php
@@ -44,6 +44,15 @@ class AutokeyConfig extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>.google.cloud.kms.v1.AutokeyConfig.State state = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      */
     protected $state = 0;
+    /**
+     * Optional. A checksum computed by the server based on the value of other
+     * fields. This may be sent on update requests to ensure that the client has
+     * an up-to-date value before proceeding. The request will be rejected with an
+     * ABORTED error on a mismatched etag.
+     *
+     * Generated from protobuf field <code>string etag = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     */
+    protected $etag = '';
 
     /**
      * Constructor.
@@ -68,6 +77,11 @@ class AutokeyConfig extends \Google\Protobuf\Internal\Message
      *           key project field will clear the configuration.
      *     @type int $state
      *           Output only. The state for the AutokeyConfig.
+     *     @type string $etag
+     *           Optional. A checksum computed by the server based on the value of other
+     *           fields. This may be sent on update requests to ensure that the client has
+     *           an up-to-date value before proceeding. The request will be rejected with an
+     *           ABORTED error on a mismatched etag.
      * }
      */
     public function __construct($data = NULL) {
@@ -175,5 +189,37 @@ public function setState($var)
         return $this;
     }
 
+    /**
+     * Optional. A checksum computed by the server based on the value of other
+     * fields. This may be sent on update requests to ensure that the client has
+     * an up-to-date value before proceeding. The request will be rejected with an
+     * ABORTED error on a mismatched etag.
+     *
+     * Generated from protobuf field <code>string etag = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @return string
+     */
+    public function getEtag()
+    {
+        return $this->etag;
+    }
+
+    /**
+     * Optional. A checksum computed by the server based on the value of other
+     * fields. This may be sent on update requests to ensure that the client has
+     * an up-to-date value before proceeding. The request will be rejected with an
+     * ABORTED error on a mismatched etag.
+     *
+     * Generated from protobuf field <code>string etag = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setEtag($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->etag = $var;
+
+        return $this;
+    }
+
 }
 
diff --git a/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionAlgorithm.php b/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionAlgorithm.php
index c7c31d9d8d39..e30f22406490 100644
--- a/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionAlgorithm.php
+++ b/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionAlgorithm.php
@@ -39,6 +39,7 @@
  * [MAC][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.MAC].
  * The suffix following `HMAC_` corresponds to the hash algorithm being used
  * (eg. SHA256).
+ * Algorithms beginning with `PQ_` are post-quantum.
  * For more information, see [Key purposes and algorithms]
  * (https://cloud.google.com/kms/docs/algorithms).
  *
diff --git a/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionState.php b/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionState.php
index 7806704a7020..5cfd545d4edb 100644
--- a/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionState.php
+++ b/Kms/src/V1/CryptoKeyVersion/CryptoKeyVersionState.php
@@ -46,7 +46,7 @@ class CryptoKeyVersionState
      */
     const DISABLED = 2;
     /**
-     * This version is destroyed, and the key material is no longer stored.
+     * The key material of this version is destroyed and no longer stored.
      * This version may only become
      * [ENABLED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.ENABLED]
      * again if this version is
diff --git a/Kms/src/V1/ListCryptoKeyVersionsResponse.php b/Kms/src/V1/ListCryptoKeyVersionsResponse.php
index bbbe9ccb0775..5c7781143e8a 100644
--- a/Kms/src/V1/ListCryptoKeyVersionsResponse.php
+++ b/Kms/src/V1/ListCryptoKeyVersionsResponse.php
@@ -34,6 +34,9 @@ class ListCryptoKeyVersionsResponse extends \Google\Protobuf\Internal\Message
      * The total number of
      * [CryptoKeyVersions][google.cloud.kms.v1.CryptoKeyVersion] that matched the
      * query.
+     * This field is not populated if
+     * [ListCryptoKeyVersionsRequest.filter][google.cloud.kms.v1.ListCryptoKeyVersionsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      */
@@ -55,6 +58,9 @@ class ListCryptoKeyVersionsResponse extends \Google\Protobuf\Internal\Message
      *           The total number of
      *           [CryptoKeyVersions][google.cloud.kms.v1.CryptoKeyVersion] that matched the
      *           query.
+     *           This field is not populated if
+     *           [ListCryptoKeyVersionsRequest.filter][google.cloud.kms.v1.ListCryptoKeyVersionsRequest.filter]
+     *           is applied.
      * }
      */
     public function __construct($data = NULL) {
@@ -122,6 +128,9 @@ public function setNextPageToken($var)
      * The total number of
      * [CryptoKeyVersions][google.cloud.kms.v1.CryptoKeyVersion] that matched the
      * query.
+     * This field is not populated if
+     * [ListCryptoKeyVersionsRequest.filter][google.cloud.kms.v1.ListCryptoKeyVersionsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @return int
@@ -135,6 +144,9 @@ public function getTotalSize()
      * The total number of
      * [CryptoKeyVersions][google.cloud.kms.v1.CryptoKeyVersion] that matched the
      * query.
+     * This field is not populated if
+     * [ListCryptoKeyVersionsRequest.filter][google.cloud.kms.v1.ListCryptoKeyVersionsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @param int $var
diff --git a/Kms/src/V1/ListCryptoKeysResponse.php b/Kms/src/V1/ListCryptoKeysResponse.php
index 256c1b36b885..6ea2d282ad42 100644
--- a/Kms/src/V1/ListCryptoKeysResponse.php
+++ b/Kms/src/V1/ListCryptoKeysResponse.php
@@ -33,6 +33,9 @@ class ListCryptoKeysResponse extends \Google\Protobuf\Internal\Message
     /**
      * The total number of [CryptoKeys][google.cloud.kms.v1.CryptoKey] that
      * matched the query.
+     * This field is not populated if
+     * [ListCryptoKeysRequest.filter][google.cloud.kms.v1.ListCryptoKeysRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      */
@@ -53,6 +56,9 @@ class ListCryptoKeysResponse extends \Google\Protobuf\Internal\Message
      *     @type int $total_size
      *           The total number of [CryptoKeys][google.cloud.kms.v1.CryptoKey] that
      *           matched the query.
+     *           This field is not populated if
+     *           [ListCryptoKeysRequest.filter][google.cloud.kms.v1.ListCryptoKeysRequest.filter]
+     *           is applied.
      * }
      */
     public function __construct($data = NULL) {
@@ -119,6 +125,9 @@ public function setNextPageToken($var)
     /**
      * The total number of [CryptoKeys][google.cloud.kms.v1.CryptoKey] that
      * matched the query.
+     * This field is not populated if
+     * [ListCryptoKeysRequest.filter][google.cloud.kms.v1.ListCryptoKeysRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @return int
@@ -131,6 +140,9 @@ public function getTotalSize()
     /**
      * The total number of [CryptoKeys][google.cloud.kms.v1.CryptoKey] that
      * matched the query.
+     * This field is not populated if
+     * [ListCryptoKeysRequest.filter][google.cloud.kms.v1.ListCryptoKeysRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @param int $var
diff --git a/Kms/src/V1/ListEkmConnectionsResponse.php b/Kms/src/V1/ListEkmConnectionsResponse.php
index cf84a145df5e..2273176dd077 100644
--- a/Kms/src/V1/ListEkmConnectionsResponse.php
+++ b/Kms/src/V1/ListEkmConnectionsResponse.php
@@ -33,6 +33,9 @@ class ListEkmConnectionsResponse extends \Google\Protobuf\Internal\Message
     /**
      * The total number of [EkmConnections][google.cloud.kms.v1.EkmConnection]
      * that matched the query.
+     * This field is not populated if
+     * [ListEkmConnectionsRequest.filter][google.cloud.kms.v1.ListEkmConnectionsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      */
@@ -53,6 +56,9 @@ class ListEkmConnectionsResponse extends \Google\Protobuf\Internal\Message
      *     @type int $total_size
      *           The total number of [EkmConnections][google.cloud.kms.v1.EkmConnection]
      *           that matched the query.
+     *           This field is not populated if
+     *           [ListEkmConnectionsRequest.filter][google.cloud.kms.v1.ListEkmConnectionsRequest.filter]
+     *           is applied.
      * }
      */
     public function __construct($data = NULL) {
@@ -119,6 +125,9 @@ public function setNextPageToken($var)
     /**
      * The total number of [EkmConnections][google.cloud.kms.v1.EkmConnection]
      * that matched the query.
+     * This field is not populated if
+     * [ListEkmConnectionsRequest.filter][google.cloud.kms.v1.ListEkmConnectionsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @return int
@@ -131,6 +140,9 @@ public function getTotalSize()
     /**
      * The total number of [EkmConnections][google.cloud.kms.v1.EkmConnection]
      * that matched the query.
+     * This field is not populated if
+     * [ListEkmConnectionsRequest.filter][google.cloud.kms.v1.ListEkmConnectionsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @param int $var
diff --git a/Kms/src/V1/ListImportJobsResponse.php b/Kms/src/V1/ListImportJobsResponse.php
index 04f11ca76dd2..aa2597e9f7ed 100644
--- a/Kms/src/V1/ListImportJobsResponse.php
+++ b/Kms/src/V1/ListImportJobsResponse.php
@@ -33,6 +33,9 @@ class ListImportJobsResponse extends \Google\Protobuf\Internal\Message
     /**
      * The total number of [ImportJobs][google.cloud.kms.v1.ImportJob] that
      * matched the query.
+     * This field is not populated if
+     * [ListImportJobsRequest.filter][google.cloud.kms.v1.ListImportJobsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      */
@@ -53,6 +56,9 @@ class ListImportJobsResponse extends \Google\Protobuf\Internal\Message
      *     @type int $total_size
      *           The total number of [ImportJobs][google.cloud.kms.v1.ImportJob] that
      *           matched the query.
+     *           This field is not populated if
+     *           [ListImportJobsRequest.filter][google.cloud.kms.v1.ListImportJobsRequest.filter]
+     *           is applied.
      * }
      */
     public function __construct($data = NULL) {
@@ -119,6 +125,9 @@ public function setNextPageToken($var)
     /**
      * The total number of [ImportJobs][google.cloud.kms.v1.ImportJob] that
      * matched the query.
+     * This field is not populated if
+     * [ListImportJobsRequest.filter][google.cloud.kms.v1.ListImportJobsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @return int
@@ -131,6 +140,9 @@ public function getTotalSize()
     /**
      * The total number of [ImportJobs][google.cloud.kms.v1.ImportJob] that
      * matched the query.
+     * This field is not populated if
+     * [ListImportJobsRequest.filter][google.cloud.kms.v1.ListImportJobsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @param int $var
diff --git a/Kms/src/V1/ListKeyRingsResponse.php b/Kms/src/V1/ListKeyRingsResponse.php
index 3deac0ea2e0f..409bf1a82c50 100644
--- a/Kms/src/V1/ListKeyRingsResponse.php
+++ b/Kms/src/V1/ListKeyRingsResponse.php
@@ -33,6 +33,9 @@ class ListKeyRingsResponse extends \Google\Protobuf\Internal\Message
     /**
      * The total number of [KeyRings][google.cloud.kms.v1.KeyRing] that matched
      * the query.
+     * This field is not populated if
+     * [ListKeyRingsRequest.filter][google.cloud.kms.v1.ListKeyRingsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      */
@@ -53,6 +56,9 @@ class ListKeyRingsResponse extends \Google\Protobuf\Internal\Message
      *     @type int $total_size
      *           The total number of [KeyRings][google.cloud.kms.v1.KeyRing] that matched
      *           the query.
+     *           This field is not populated if
+     *           [ListKeyRingsRequest.filter][google.cloud.kms.v1.ListKeyRingsRequest.filter]
+     *           is applied.
      * }
      */
     public function __construct($data = NULL) {
@@ -119,6 +125,9 @@ public function setNextPageToken($var)
     /**
      * The total number of [KeyRings][google.cloud.kms.v1.KeyRing] that matched
      * the query.
+     * This field is not populated if
+     * [ListKeyRingsRequest.filter][google.cloud.kms.v1.ListKeyRingsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @return int
@@ -131,6 +140,9 @@ public function getTotalSize()
     /**
      * The total number of [KeyRings][google.cloud.kms.v1.KeyRing] that matched
      * the query.
+     * This field is not populated if
+     * [ListKeyRingsRequest.filter][google.cloud.kms.v1.ListKeyRingsRequest.filter]
+     * is applied.
      *
      * Generated from protobuf field <code>int32 total_size = 3;</code>
      * @param int $var
diff --git a/Kms/tests/Unit/V1/Client/AutokeyAdminClientTest.php b/Kms/tests/Unit/V1/Client/AutokeyAdminClientTest.php
index 6812384a587f..4ce29363e000 100644
--- a/Kms/tests/Unit/V1/Client/AutokeyAdminClientTest.php
+++ b/Kms/tests/Unit/V1/Client/AutokeyAdminClientTest.php
@@ -86,9 +86,11 @@ public function getAutokeyConfigTest()
         // Mock response
         $name2 = 'name2-1052831874';
         $keyProject = 'keyProject721994041';
+        $etag = 'etag3123477';
         $expectedResponse = new AutokeyConfig();
         $expectedResponse->setName($name2);
         $expectedResponse->setKeyProject($keyProject);
+        $expectedResponse->setEtag($etag);
         $transport->addResponse($expectedResponse);
         // Mock request
         $formattedName = $gapicClient->autokeyConfigName('[FOLDER]');
@@ -218,9 +220,11 @@ public function updateAutokeyConfigTest()
         // Mock response
         $name = 'name3373707';
         $keyProject = 'keyProject721994041';
+        $etag = 'etag3123477';
         $expectedResponse = new AutokeyConfig();
         $expectedResponse->setName($name);
         $expectedResponse->setKeyProject($keyProject);
+        $expectedResponse->setEtag($etag);
         $transport->addResponse($expectedResponse);
         // Mock request
         $autokeyConfig = new AutokeyConfig();
@@ -622,9 +626,11 @@ public function getAutokeyConfigAsyncTest()
         // Mock response
         $name2 = 'name2-1052831874';
         $keyProject = 'keyProject721994041';
+        $etag = 'etag3123477';
         $expectedResponse = new AutokeyConfig();
         $expectedResponse->setName($name2);
         $expectedResponse->setKeyProject($keyProject);
+        $expectedResponse->setEtag($etag);
         $transport->addResponse($expectedResponse);
         // Mock request
         $formattedName = $gapicClient->autokeyConfigName('[FOLDER]');