diff --git a/stubs/cachetools/cachetools/ttl.pyi b/stubs/cachetools/cachetools/ttl.pyi
index db7618453..539ed69e2 100644
--- a/stubs/cachetools/cachetools/ttl.pyi
+++ b/stubs/cachetools/cachetools/ttl.pyi
@@ -20,4 +20,4 @@ class TTLCache(Cache[_KT, _VT]):
     def timer(self) -> Callable[[], float]: ...
     @property
     def ttl(self) -> float: ...
-    def expire(self, time: Optional[Callable[[], float]] = ...) -> None: ...
+    def expire(self, time: Optional[float] = ...) -> None: ...