diff --git a/src/SecretManager/CloudSqlSingleUserCredentials.php b/src/SecretManager/CloudSqlSingleUserCredentials.php
new file mode 100644
index 00000000000..15a1a15252e
--- /dev/null
+++ b/src/SecretManager/CloudSqlSingleUserCredentials.php
@@ -0,0 +1,94 @@
+<?php
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+namespace Google\Service\SecretManager;
+
+class CloudSqlSingleUserCredentials extends \Google\Model
+{
+  /**
+   * Required. Instance ID of the Cloud SQL instance.
+   *
+   * @var string
+   */
+  public $instanceId;
+  /**
+   * Optional. Password of the Cloud SQL instance. If this is not provided, a
+   * random password will be generated.
+   *
+   * @var string
+   */
+  public $password;
+  /**
+   * Required. Username of the Cloud SQL instance.
+   *
+   * @var string
+   */
+  public $username;
+
+  /**
+   * Required. Instance ID of the Cloud SQL instance.
+   *
+   * @param string $instanceId
+   */
+  public function setInstanceId($instanceId)
+  {
+    $this->instanceId = $instanceId;
+  }
+  /**
+   * @return string
+   */
+  public function getInstanceId()
+  {
+    return $this->instanceId;
+  }
+  /**
+   * Optional. Password of the Cloud SQL instance. If this is not provided, a
+   * random password will be generated.
+   *
+   * @param string $password
+   */
+  public function setPassword($password)
+  {
+    $this->password = $password;
+  }
+  /**
+   * @return string
+   */
+  public function getPassword()
+  {
+    return $this->password;
+  }
+  /**
+   * Required. Username of the Cloud SQL instance.
+   *
+   * @param string $username
+   */
+  public function setUsername($username)
+  {
+    $this->username = $username;
+  }
+  /**
+   * @return string
+   */
+  public function getUsername()
+  {
+    return $this->username;
+  }
+}
+
+// Adding a class alias for backwards compatibility with the previous class name.
+class_alias(CloudSqlSingleUserCredentials::class, 'Google_Service_SecretManager_CloudSqlSingleUserCredentials');
diff --git a/src/SecretManager/EnableManagedRotationRequest.php b/src/SecretManager/EnableManagedRotationRequest.php
index 424d55673ef..3bd4e00a81e 100644
--- a/src/SecretManager/EnableManagedRotationRequest.php
+++ b/src/SecretManager/EnableManagedRotationRequest.php
@@ -19,20 +19,20 @@
 
 class EnableManagedRotationRequest extends \Google\Model
 {
-  protected $cloudSqlSingleUserCredentialsType = CloudSQLSingleUserCredentials::class;
+  protected $cloudSqlSingleUserCredentialsType = CloudSqlSingleUserCredentials::class;
   protected $cloudSqlSingleUserCredentialsDataType = '';
 
   /**
    * Credentials required for Cloud SQL DB for Single user Managed Rotation.
    *
-   * @param CloudSQLSingleUserCredentials $cloudSqlSingleUserCredentials
+   * @param CloudSqlSingleUserCredentials $cloudSqlSingleUserCredentials
    */
-  public function setCloudSqlSingleUserCredentials(CloudSQLSingleUserCredentials $cloudSqlSingleUserCredentials)
+  public function setCloudSqlSingleUserCredentials(CloudSqlSingleUserCredentials $cloudSqlSingleUserCredentials)
   {
     $this->cloudSqlSingleUserCredentials = $cloudSqlSingleUserCredentials;
   }
   /**
-   * @return CloudSQLSingleUserCredentials
+   * @return CloudSqlSingleUserCredentials
    */
   public function getCloudSqlSingleUserCredentials()
   {