diff --git a/stdlib/3/unittest/mock.pyi b/stdlib/3/unittest/mock.pyi
index 1de1d07a9..14ed52219 100644
--- a/stdlib/3/unittest/mock.pyi
+++ b/stdlib/3/unittest/mock.pyi
@@ -72,7 +72,7 @@ class Base:
     def __init__(self, *args: Any, **kwargs: Any) -> None: ...
 
 class NonCallableMock(Base, Any):  # type: ignore
-    def __new__(cls, *args, **kw) -> NonCallableMock: ...
+    def __new__(cls, *args: Any, **kw: Any) -> NonCallableMock: ...
     def __init__(
         self,
         spec: Union[List[str], object, Type[object], None] = ...,
@@ -86,7 +86,7 @@ class NonCallableMock(Base, Any):  # type: ignore
         _spec_as_instance: bool = ...,
         _eat_self: Optional[bool] = ...,
         unsafe: bool = ...,
-        **kwargs,
+        **kwargs: Any,
     ) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
     if sys.version_info >= (3, 8):
@@ -116,7 +116,7 @@ class NonCallableMock(Base, Any):  # type: ignore
     def assert_any_call(self, *args: Any, **kwargs: Any) -> None: ...
     def assert_has_calls(self, calls: Sequence[_Call], any_order: bool = ...) -> None: ...
     def mock_add_spec(self, spec: Any, spec_set: bool = ...) -> None: ...
-    def _mock_add_spec(self, spec: Any, spec_set, _spec_as_instance: bool = ..., _eat_self: bool = ...) -> None: ...
+    def _mock_add_spec(self, spec: Any, spec_set: bool, _spec_as_instance: bool = ..., _eat_self: bool = ...) -> None: ...
     def attach_mock(self, mock: NonCallableMock, attribute: str) -> None: ...
     def configure_mock(self, **kwargs: Any) -> None: ...
     return_value: Any
diff --git a/third_party/2and3/mock.pyi b/third_party/2and3/mock.pyi
index 1de1d07a9..14ed52219 100644
--- a/third_party/2and3/mock.pyi
+++ b/third_party/2and3/mock.pyi
@@ -72,7 +72,7 @@ class Base:
     def __init__(self, *args: Any, **kwargs: Any) -> None: ...
 
 class NonCallableMock(Base, Any):  # type: ignore
-    def __new__(cls, *args, **kw) -> NonCallableMock: ...
+    def __new__(cls, *args: Any, **kw: Any) -> NonCallableMock: ...
     def __init__(
         self,
         spec: Union[List[str], object, Type[object], None] = ...,
@@ -86,7 +86,7 @@ class NonCallableMock(Base, Any):  # type: ignore
         _spec_as_instance: bool = ...,
         _eat_self: Optional[bool] = ...,
         unsafe: bool = ...,
-        **kwargs,
+        **kwargs: Any,
     ) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
     if sys.version_info >= (3, 8):
@@ -116,7 +116,7 @@ class NonCallableMock(Base, Any):  # type: ignore
     def assert_any_call(self, *args: Any, **kwargs: Any) -> None: ...
     def assert_has_calls(self, calls: Sequence[_Call], any_order: bool = ...) -> None: ...
     def mock_add_spec(self, spec: Any, spec_set: bool = ...) -> None: ...
-    def _mock_add_spec(self, spec: Any, spec_set, _spec_as_instance: bool = ..., _eat_self: bool = ...) -> None: ...
+    def _mock_add_spec(self, spec: Any, spec_set: bool, _spec_as_instance: bool = ..., _eat_self: bool = ...) -> None: ...
     def attach_mock(self, mock: NonCallableMock, attribute: str) -> None: ...
     def configure_mock(self, **kwargs: Any) -> None: ...
     return_value: Any