diff --git a/composer.json b/composer.json
index b3c60be..d563201 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
   "require": {
     "php": ">=5.5.9",
     "illuminate/support": "^5.1|^6.0|^7.0",
-    "superbalist/flysystem-google-storage": ">=3.0 <8.0",
+    "superbalist/flysystem-google-storage": "7.2.*",
     "illuminate/filesystem": "^5.1|^6.0|^7.0",
     "league/flysystem-cached-adapter": "^1.0"
   },
diff --git a/src/GoogleCloudStorageServiceProvider.php b/src/GoogleCloudStorageServiceProvider.php
index c45aee0..4f266c6 100644
--- a/src/GoogleCloudStorageServiceProvider.php
+++ b/src/GoogleCloudStorageServiceProvider.php
@@ -92,12 +92,9 @@ private function createClient($config)
             ]);
         }
 
-        if (! is_array($keyFile)) {
-            $keyFile = [];
-        }
         return new StorageClient([
             'projectId' => $config['project_id'],
-            'keyFile' => array_merge(["project_id" => $config['project_id']], $keyFile)
+            'keyFile' => is_array($keyFile) ? $keyFile : [],
         ]);
     }