diff --git a/stdlib/2and3/ctypes/__init__.pyi b/stdlib/2and3/ctypes/__init__.pyi
index 52dda5228..c0edd28a8 100644
--- a/stdlib/2and3/ctypes/__init__.pyi
+++ b/stdlib/2and3/ctypes/__init__.pyi
@@ -79,7 +79,7 @@ _PF = _UnionT[
 ]
 class _FuncPointer(_PointerLike, _CData):
     restype: _UnionT[Type[_CData], Callable[[int], None], None] = ...
-    argtypes: Tuple[Type[_CData], ...] = ...
+    argtypes: Sequence[Type[_CData]] = ...
     errcheck: _ECT = ...
     @overload
     def __init__(self, address: int) -> None: ...