diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index cc72f4758ee6..11a1abddafe8 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -1438,7 +1438,7 @@ class BaseException(object):
         __cause__: Optional[BaseException]
         __context__: Optional[BaseException]
         __traceback__: Optional[TracebackType]
-    def __init__(self, *args: object) -> None: ...
+    def __init__(self, *args: object, **kwargs: object) -> None: ...
     if sys.version_info < (3,):
         def __getitem__(self, i: int) -> Any: ...
         def __getslice__(self, start: int, stop: int) -> Tuple[Any, ...]: ...
diff --git a/stdlib/2and3/builtins.pyi b/stdlib/2and3/builtins.pyi
index cc72f4758ee6..11a1abddafe8 100644
--- a/stdlib/2and3/builtins.pyi
+++ b/stdlib/2and3/builtins.pyi
@@ -1438,7 +1438,7 @@ class BaseException(object):
         __cause__: Optional[BaseException]
         __context__: Optional[BaseException]
         __traceback__: Optional[TracebackType]
-    def __init__(self, *args: object) -> None: ...
+    def __init__(self, *args: object, **kwargs: object) -> None: ...
     if sys.version_info < (3,):
         def __getitem__(self, i: int) -> Any: ...
         def __getslice__(self, start: int, stop: int) -> Tuple[Any, ...]: ...