diff --git a/mypy/test/teststubtest.py b/mypy/test/teststubtest.py
index 800f522d90a0..dfbde217e82f 100644
--- a/mypy/test/teststubtest.py
+++ b/mypy/test/teststubtest.py
@@ -88,6 +88,8 @@ class _TypedDict(Mapping[str, object]):
     __total__: ClassVar[bool]
     __readonly_keys__: ClassVar[frozenset[str]]
     __mutable_keys__: ClassVar[frozenset[str]]
+    __closed__: ClassVar[bool | None]
+    __extra_items__: ClassVar[Any]
 def overload(func: _T) -> _T: ...
 def type_check_only(func: _T) -> _T: ...
 def final(func: _T) -> _T: ...