diff --git a/stdlib/3/functools.pyi b/stdlib/3/functools.pyi
index 515f3f1ee..1575fdbc8 100644
--- a/stdlib/3/functools.pyi
+++ b/stdlib/3/functools.pyi
@@ -109,3 +109,5 @@ if sys.version_info >= (3, 9):
         def static_order(self) -> Iterable[_T]: ...
 
     class CycleError(ValueError): ...
+
+    def cache(__user_function: Callable[..., _T]) -> _lru_cache_wrapper[_T]: ...