diff --git a/pytype/stubs/builtins/builtins.pytd b/pytype/stubs/builtins/builtins.pytd
index c1ccfa9ef..fcad0470e 100644
--- a/pytype/stubs/builtins/builtins.pytd
+++ b/pytype/stubs/builtins/builtins.pytd
@@ -255,6 +255,7 @@ class object():
     def __hash__(self) -> int: ...
     def __setattr__(self, name, value) -> None: ...
     def __getattribute__(self, name) -> Any: ...
+    def __reduce__(self) -> str | tuple[Any, ...]: ...
     def __new__(cls: Type[_T]) -> _T: ...
     # Used by special_builtins.Object to handler super.__new__.
     @staticmethod