diff --git a/stdlib/typing.pyi b/stdlib/typing.pyi
index 1ab54a00b..0b65eac41 100644
--- a/stdlib/typing.pyi
+++ b/stdlib/typing.pyi
@@ -870,6 +870,10 @@ class _TypedDict(Mapping[str, object], metaclass=ABCMeta):
     if sys.version_info >= (3, 9):
         __required_keys__: ClassVar[frozenset[str]]
         __optional_keys__: ClassVar[frozenset[str]]
+    # __orig_bases__ sometimes exists on <3.12, but not consistently,
+    # so we only add it to the stub on 3.12+
+    if sys.version_info >= (3, 12):
+        __orig_bases__: ClassVar[tuple[Any, ...]]
     def copy(self) -> typing_extensions.Self: ...
     # Using Never so that only calls using mypy plugin hook that specialize the signature
     # can go through.
diff --git a/stdlib/typing_extensions.pyi b/stdlib/typing_extensions.pyi
index 7e643469e..c55a383e8 100644
--- a/stdlib/typing_extensions.pyi
+++ b/stdlib/typing_extensions.pyi
@@ -148,6 +148,7 @@ class _TypedDict(Mapping[str, object], metaclass=abc.ABCMeta):
     __required_keys__: ClassVar[frozenset[str]]
     __optional_keys__: ClassVar[frozenset[str]]
     __total__: ClassVar[bool]
+    __orig_bases__: ClassVar[tuple[Any, ...]]
     def copy(self) -> Self: ...
     # Using Never so that only calls using mypy plugin hook that specialize the signature
     # can go through.