diff --git a/stdlib/3/os/__init__.pyi b/stdlib/3/os/__init__.pyi
index 142961e7a4f9..be9cbbda58cd 100644
--- a/stdlib/3/os/__init__.pyi
+++ b/stdlib/3/os/__init__.pyi
@@ -159,7 +159,7 @@ class statvfs_result:  # Unix only
 # ----- os function stubs -----
 def fsencode(filename: str) -> bytes: ...
 def fsdecode(filename: bytes) -> str: ...
-def get_exec_path(env: Optional[Dict[str, str]] = ...) -> List[str] : ...
+def get_exec_path(env: Optional[Mapping[str, str]] = ...) -> List[str] : ...
 # NOTE: get_exec_path(): returns List[bytes] when env not None
 def ctermid() -> str: ...  # Unix only
 def getegid() -> int: ...  # Unix only
diff --git a/stdlib/3/unittest.pyi b/stdlib/3/unittest.pyi
index 500a2368e92c..41fe554120bf 100644
--- a/stdlib/3/unittest.pyi
+++ b/stdlib/3/unittest.pyi
@@ -15,8 +15,8 @@ _FT = TypeVar('_FT', Callable[[Any], Any])
 
 
 def skip(reason: str) -> Callable[[_FT], _FT]: ...
-def skipIf(condition: bool, reason: str) -> Callable[[_FT], _FT]: ...
-def skipUnless(condition: bool, reason: str) -> Callable[[_FT], _FT]: ...
+def skipIf(condition: object, reason: str) -> Callable[[_FT], _FT]: ...
+def skipUnless(condition: object, reason: str) -> Callable[[_FT], _FT]: ...
 def expectedFailure(func: _FT) -> _FT: ...
 
 class SkipTest(Exception):