diff --git a/third_party/2and3/typing_extensions.pyi b/third_party/2and3/typing_extensions.pyi
index 3342c06af526..4a0f97215130 100644
--- a/third_party/2and3/typing_extensions.pyi
+++ b/third_party/2and3/typing_extensions.pyi
@@ -92,4 +92,4 @@ Annotated: _SpecialForm = ...
 _AnnotatedAlias: Any = ...  # undocumented
 
 # TypeAlias is a (non-subscriptable) special form.
-TypeAlias: object
+class TypeAlias: ...