diff --git a/src/GoogleCloudStorage/StubStorageClient.php b/src/GoogleCloudStorage/StubStorageClient.php
index cdad7e162..a9c639da3 100644
--- a/src/GoogleCloudStorage/StubStorageClient.php
+++ b/src/GoogleCloudStorage/StubStorageClient.php
@@ -21,7 +21,7 @@ public function __construct(array $config = [])
      */
     protected $projectId;
 
-    public function bucket($name, $userProject = false)
+    public function bucket($name, $userProject = false, array $options = [])
     {
         $knownBuckets = ['flysystem', 'no-acl-bucket-for-ci'];
         $isKnownBucket = in_array($name, $knownBuckets);