diff --git a/stdlib/2and3/difflib.pyi b/stdlib/2and3/difflib.pyi
index 4701e32a2..f62864fc2 100644
--- a/stdlib/2and3/difflib.pyi
+++ b/stdlib/2and3/difflib.pyi
@@ -33,7 +33,7 @@ class SequenceMatcher(Generic[_T]):
     def quick_ratio(self) -> float: ...
     def real_quick_ratio(self) -> float: ...
 
-def get_close_matches(word: Sequence[_T], possibilities: List[Sequence[_T]],
+def get_close_matches(word: Sequence[_T], possibilities: Iterable[Sequence[_T]],
                       n: int = ..., cutoff: float = ...) -> List[Sequence[_T]]: ...
 
 class Differ: