diff --git a/stubs/typed-ast/typed_ast/ast3.pyi b/stubs/typed-ast/typed_ast/ast3.pyi
index ab941d388171..1acf9315ba0c 100644
--- a/stubs/typed-ast/typed_ast/ast3.pyi
+++ b/stubs/typed-ast/typed_ast/ast3.pyi
@@ -358,7 +358,7 @@ class arguments(AST):
     args: list[arg]
     vararg: arg | None
     kwonlyargs: list[arg]
-    kw_defaults: list[expr]
+    kw_defaults: list[expr | None]
     kwarg: arg | None
     defaults: list[expr]