diff --git a/src/CloudSecurityToken/GoogleIdentityStsV1Options.php b/src/CloudSecurityToken/GoogleIdentityStsV1Options.php
index ae3c0ba9e77..9f423000c12 100644
--- a/src/CloudSecurityToken/GoogleIdentityStsV1Options.php
+++ b/src/CloudSecurityToken/GoogleIdentityStsV1Options.php
@@ -22,8 +22,8 @@ class GoogleIdentityStsV1Options extends \Google\Model
   protected $accessBoundaryType = GoogleIdentityStsV1AccessBoundary::class;
   protected $accessBoundaryDataType = '';
   /**
-   * The unpadded, base64url-encoded SHA-256 hash of the certificate's DER
-   * encoding and it must be 43 characters long. The resulting token will be
+   * The unpadded, url-escaped, base64-encoded SHA-256 hash of the certificate's
+   * DER encoding. It must be 43 characters long. The resulting token will be
    * bound to this value.
    *
    * @var string
@@ -60,8 +60,8 @@ public function getAccessBoundary()
     return $this->accessBoundary;
   }
   /**
-   * The unpadded, base64url-encoded SHA-256 hash of the certificate's DER
-   * encoding and it must be 43 characters long. The resulting token will be
+   * The unpadded, url-escaped, base64-encoded SHA-256 hash of the certificate's
+   * DER encoding. It must be 43 characters long. The resulting token will be
    * bound to this value.
    *
    * @param string $bindCertFingerprint