diff --git a/stdlib/3/runpy.pyi b/stdlib/3/runpy.pyi
index 193a320eb..654c53c8e 100644
--- a/stdlib/3/runpy.pyi
+++ b/stdlib/3/runpy.pyi
@@ -1,17 +1,23 @@
-from typing import Any
+from types import ModuleType
+from typing import Dict, Optional, Any
 
 class _TempModule:
-    mod_name = ...  # type: Any
-    module = ...  # type: Any
+    mod_name: str = ...
+    module: ModuleType = ...
     def __init__(self, mod_name): ...
     def __enter__(self): ...
     def __exit__(self, *args): ...
 
 class _ModifiedArgv0:
-    value = ...  # type: Any
+    value: Any = ...
     def __init__(self, value): ...
     def __enter__(self): ...
     def __exit__(self, *args): ...
 
-def run_module(mod_name, init_globals=None, run_name=None, alter_sys=False): ...
-def run_path(path_name, init_globals=None, run_name=None): ...
+def run_module(mod_name: str,
+               init_globals: Optional[Dict[str, Any]] = ...,
+               run_name: Optional[str] = ...,
+               alter_sys: bool = ...): ...
+def run_path(path_name: str,
+             init_globals: Optional[Dict[str, Any]] = ...,
+             run_name: str = ...): ...