diff --git a/stdlib/3/_ast.pyi b/stdlib/3/_ast.pyi
index 23bf799a4..0c3915636 100644
--- a/stdlib/3/_ast.pyi
+++ b/stdlib/3/_ast.pyi
@@ -9,7 +9,7 @@ identifier = str
 class AST:
     _attributes = ... # type: typing.Tuple[str, ...]
     _fields = ... # type: typing.Tuple[str, ...]
-    def __init__(self, *args, **kwargs) -> None: ...
+    def __init__(self, *args: Any, **kwargs: Any) -> None: ...
 
 class mod(AST):
     ...