diff --git a/backend/app/core/common.py b/backend/app/core/common.py
index 220952a..60ed5f6 100644
--- a/backend/app/core/common.py
+++ b/backend/app/core/common.py
@@ -1,12 +1,10 @@
 
-from pydantic import BaseModel,Field
-from pydantic.generics import GenericModel
+from pydantic import BaseModel
 from typing import Generic,TypeVar,Optional
 
 T = TypeVar('T')
 
-class ApiReturnModel(GenericModel,Generic[T]):
+class ApiReturnModel(BaseModel,Generic[T]):
     code:int = 0
     msg:str ="OK"
-    data:T
-
+    data:T
\ No newline at end of file