diff --git a/app/common/model/ProductAttrPropBaseModel.php b/app/common/model/ProductAttrPropBaseModel.php
index 2764f44d..d5b7ff00 100644
--- a/app/common/model/ProductAttrPropBaseModel.php
+++ b/app/common/model/ProductAttrPropBaseModel.php
@@ -21,6 +21,5 @@ class ProductAttrPropBaseModel extends BaseModel
         'prop_name'  => 'string',
         'prop_value' => 'string',
         'created_at' => 'datetime',
-        'updated_at' => 'datetime',
     ];
 }