diff --git a/app/Http/Controllers/Admin/ModuleController.php b/app/Http/Controllers/Admin/ModuleController.php
index c80689d..f121e71 100644
--- a/app/Http/Controllers/Admin/ModuleController.php
+++ b/app/Http/Controllers/Admin/ModuleController.php
@@ -72,7 +72,7 @@ private function rules(): array
             'name' => 'required|string|max:255',
             'url' => 'required|url',
             'status' => 'required|string|in:up,down,maintenance',
-            'balance' => 'required|numeric',
+            'balance' => 'nullable|numeric',
             'wecom_key' => 'nullable|string|max:255',
         ];
     }