diff --git a/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1ListReleasesResponse.php b/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1ListReleasesResponse.php
index 02384dc72a4..1876d4898ec 100644
--- a/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1ListReleasesResponse.php
+++ b/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1ListReleasesResponse.php
@@ -29,6 +29,12 @@ class GoogleFirebaseAppdistroV1ListReleasesResponse extends \Google\Collection
   public $nextPageToken;
   protected $releasesType = GoogleFirebaseAppdistroV1Release::class;
   protected $releasesDataType = 'array';
+  /**
+   * The total number of releases.
+   *
+   * @var int
+   */
+  public $totalSize;
 
   /**
    * A short-lived token, which can be sent as `pageToken` to retrieve the next
@@ -63,6 +69,22 @@ public function getReleases()
   {
     return $this->releases;
   }
+  /**
+   * The total number of releases.
+   *
+   * @param int $totalSize
+   */
+  public function setTotalSize($totalSize)
+  {
+    $this->totalSize = $totalSize;
+  }
+  /**
+   * @return int
+   */
+  public function getTotalSize()
+  {
+    return $this->totalSize;
+  }
 }
 
 // Adding a class alias for backwards compatibility with the previous class name.
diff --git a/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1Release.php b/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1Release.php
index f63f6a49d33..bd4b79871eb 100644
--- a/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1Release.php
+++ b/src/FirebaseAppDistribution/GoogleFirebaseAppdistroV1Release.php
@@ -19,6 +19,28 @@
 
 class GoogleFirebaseAppdistroV1Release extends \Google\Model
 {
+  /**
+   * Default value.
+   */
+  public const ANDROID_PACKAGE_REGISTRATION_STATE_ANDROID_PACKAGE_REGISTRATION_STATE_UNSPECIFIED = 'ANDROID_PACKAGE_REGISTRATION_STATE_UNSPECIFIED';
+  /**
+   * Package is registered with the release binary's certificate fingerprint.
+   */
+  public const ANDROID_PACKAGE_REGISTRATION_STATE_REGISTERED = 'REGISTERED';
+  /**
+   * Package is not registered with any public certificate.
+   */
+  public const ANDROID_PACKAGE_REGISTRATION_STATE_NOT_REGISTERED = 'NOT_REGISTERED';
+  /**
+   * Package is registered with another public certificate fingerprint.
+   */
+  public const ANDROID_PACKAGE_REGISTRATION_STATE_REGISTERED_WITH_ANOTHER_CERTIFICATE_FINGERPRINT = 'REGISTERED_WITH_ANOTHER_CERTIFICATE_FINGERPRINT';
+  /**
+   * Output only. Registration state of the Android package (BinaryType.APK).
+   *
+   * @var string
+   */
+  public $androidPackageRegistrationState;
   /**
    * Output only. A signed link (which expires in one hour) to directly download
    * the app binary (IPA/APK/AAB) file.
@@ -84,6 +106,25 @@ class GoogleFirebaseAppdistroV1Release extends \Google\Model
    */
   public $updateTime;
 
+  /**
+   * Output only. Registration state of the Android package (BinaryType.APK).
+   *
+   * Accepted values: ANDROID_PACKAGE_REGISTRATION_STATE_UNSPECIFIED,
+   * REGISTERED, NOT_REGISTERED, REGISTERED_WITH_ANOTHER_CERTIFICATE_FINGERPRINT
+   *
+   * @param self::ANDROID_PACKAGE_REGISTRATION_STATE_* $androidPackageRegistrationState
+   */
+  public function setAndroidPackageRegistrationState($androidPackageRegistrationState)
+  {
+    $this->androidPackageRegistrationState = $androidPackageRegistrationState;
+  }
+  /**
+   * @return self::ANDROID_PACKAGE_REGISTRATION_STATE_*
+   */
+  public function getAndroidPackageRegistrationState()
+  {
+    return $this->androidPackageRegistrationState;
+  }
   /**
    * Output only. A signed link (which expires in one hour) to directly download
    * the app binary (IPA/APK/AAB) file.
@@ -203,7 +244,7 @@ public function getName()
     return $this->name;
   }
   /**
-   * Notes of the release.
+   * Notes about the release.
    *
    * @param GoogleFirebaseAppdistroV1ReleaseNotes $releaseNotes
    */
diff --git a/src/FirebaseAppDistribution/Resource/ProjectsAppsReleases.php b/src/FirebaseAppDistribution/Resource/ProjectsAppsReleases.php
index 65077053d45..ff5738644fd 100644
--- a/src/FirebaseAppDistribution/Resource/ProjectsAppsReleases.php
+++ b/src/FirebaseAppDistribution/Resource/ProjectsAppsReleases.php
@@ -98,17 +98,26 @@ public function get($name, $optParams = [])
    * @param array $optParams Optional parameters.
    *
    * @opt_param string filter Optional. The expression to filter releases listed
-   * in the response. To learn more about filtering, refer to [Google's AIP-160
-   * standard](http://aip.dev/160). Supported fields: - `releaseNotes.text`
-   * supports `=` (can contain a wildcard character (`*`) at the beginning or end
-   * of the string) - `createTime` supports `<`, `<=`, `>` and `>=`, and expects
-   * an RFC-3339 formatted string Examples: - `createTime <=
+   * in the response. To learn more about filtering, refer to the [AIP-160
+   * standard](http://aip.dev/160). Supported fields: - Time fields supporting
+   * `<`, `<=`, `>` and `>=`; expecting an RFC-3339 formatted string: -
+   * `create_time` (or `createTime`) - `update_time` (or `updateTime`) -
+   * `expire_time` (or `expireTime`) - Text fields supporting `=`. The compared
+   * text can contain a wildcard character (`*`) at the beginning and/or end of
+   * the string which also enables case-insensitive matching: -
+   * `release_notes.text` (or `releaseNotes.text`) - `display_version` (or
+   * `displayVersion`) - `build_version` (or `buildVersion`). Examples: -
+   * `createTime <= "2021-09-08T00:00:00+04:00"` - `expire_time >
    * "2021-09-08T00:00:00+04:00"` - `releaseNotes.text="fixes" AND createTime >=
-   * "2021-09-08T00:00:00.0Z"` - `releaseNotes.text="*v1.0.0-rc*"`
+   * "2021-09-08T00:00:00.0Z"` - `releaseNotes.text="*v1.0.0-rc*"` -
+   * `(display_version = "v1.0.0-rc2" AND `build_version = "123") OR release_notes
+   * = "*v1.0.0-rc2 (123)*"`
    * @opt_param string orderBy Optional. The fields used to order releases.
-   * Supported fields: - `createTime` To specify descending order for a field,
-   * append a "desc" suffix, for example, `createTime desc`. If this parameter is
-   * not set, releases are ordered by `createTime` in descending order.
+   * Supported fields: - `create_time` (or `createTime`) - `update_time` (or
+   * `updateTime`) - `expire_time` (or `expireTime`) To specify descending order
+   * for a field, append a "desc" suffix, for example, `createTime desc`. If this
+   * parameter is not set, releases are ordered by `createTime` in descending
+   * order.
    * @opt_param int pageSize Optional. The maximum number of releases to return.
    * The service may return fewer than this value. The valid range is [1-100]; If
    * unspecified (0), at most 25 releases are returned. Values above 100 are