diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index 9754f47cb..195d4b180 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -878,7 +878,7 @@ class memoryview(Sized, Container[bytes]):
     def tobytes(self) -> bytes: ...
     def tolist(self) -> List[int]: ...
 
-class BaseException:
+class BaseException(object):
     args = ...  # type: Tuple[Any, ...]
     message = ...  # type: str
     def __init__(self, *args: Any) -> None: ...