diff --git a/stdlib/3/functools.pyi b/stdlib/3/functools.pyi
index 7f048dce2..60a186a72 100644
--- a/stdlib/3/functools.pyi
+++ b/stdlib/3/functools.pyi
@@ -24,6 +24,7 @@ class _lru_cache_wrapper(Generic[_T]):
     __wrapped__ = ...  # type: Callable[..., _T]
     def __call__(self, *args: Any, **kwargs: Any) -> _T: ...
     def cache_info(self) -> _CacheInfo: ...
+    def cache_clear(self) -> None: ...
 
 class lru_cache():
     def __init__(self, maxsize: Optional[int] = ..., typed: bool = ...) -> None: ...