diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index ffe291443..8db945191 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -672,10 +672,10 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     def items(self) -> ItemsView[_KT, _VT]: ...
     @staticmethod
     @overload
-    def fromkeys(seq: Sequence[_T]) -> Dict[_T, Any]: ...  # TODO: Actually a class method (mypy/issues#328)
+    def fromkeys(seq: Iterable[_T]) -> Dict[_T, Any]: ...  # TODO: Actually a class method (mypy/issues#328)
     @staticmethod
     @overload
-    def fromkeys(seq: Sequence[_T], value: _S) -> Dict[_T, _S]: ...
+    def fromkeys(seq: Iterable[_T], value: _S) -> Dict[_T, _S]: ...
     def __len__(self) -> int: ...
     def __getitem__(self, k: _KT) -> _VT: ...
     def __setitem__(self, k: _KT, v: _VT) -> None: ...