diff --git a/app/Http/Controllers/AppController.php b/app/Http/Controllers/AppController.php
index 2a880114a306..a9fc7da830a1 100644
--- a/app/Http/Controllers/AppController.php
+++ b/app/Http/Controllers/AppController.php
@@ -191,7 +191,9 @@ class AppController extends BaseController
             $config .= "{$key}={$val}\n";
         }
 
-        $fp = fopen(base_path().'/.env', 'w');
+        $filePath = base_path().'/.env';
+        copy($filePath, $filePath . '.backup.' . time());
+        $fp = fopen($filePath, 'w');
         fwrite($fp, $config);
         fclose($fp);