diff --git a/stdlib/2and3/pkgutil.pyi b/stdlib/2and3/pkgutil.pyi
index 5d4ff1e54..c7bad4221 100644
--- a/stdlib/2and3/pkgutil.pyi
+++ b/stdlib/2and3/pkgutil.pyi
@@ -1,6 +1,6 @@
 # Stubs for pkgutil
 
-from typing import Any, Callable, Generator, IO, Iterable, List, Optional, Tuple, NamedTuple
+from typing import Any, Callable, Generator, IO, Iterable, Optional, Tuple, NamedTuple
 import sys
 
 if sys.version_info >= (3,):
@@ -28,8 +28,8 @@ def find_loader(fullname: str) -> Loader: ...
 def get_importer(path_item: str) -> Any: ...  # TODO precise type
 def get_loader(module_or_name: str) -> Loader: ...
 def iter_importers(fullname: str = ...) -> Generator[Any, None, None]: ...  # TODO precise type
-def iter_modules(path: Optional[List[str]] = ...,
+def iter_modules(path: Optional[Iterable[str]] = ...,
                  prefix: str = ...) -> _YMFNI: ...  # TODO precise type
-def walk_packages(path: Optional[List[str]] = ..., prefix: str = ...,
+def walk_packages(path: Optional[Iterable[str]] = ..., prefix: str = ...,
                   onerror: Optional[Callable[[str], None]] = ...) -> _YMFNI: ...
 def get_data(package: str, resource: str) -> Optional[bytes]: ...