diff --git a/app/Models/Order.php b/app/Models/Order.php
index 019456de..13481cba 100644
--- a/app/Models/Order.php
+++ b/app/Models/Order.php
@@ -45,6 +45,7 @@ class Order extends Model
      * @var array
      */
     protected $casts = [
+        'pay_at' => 'datetime',
         'completed_at' => 'datetime',
         'status' => 'int',
     ];