diff --git a/src/pytest_mock/plugin.py b/src/pytest_mock/plugin.py
index 0d2ac31..6b0ce72 100644
--- a/src/pytest_mock/plugin.py
+++ b/src/pytest_mock/plugin.py
@@ -173,7 +173,7 @@ def async_stub(self, name: Optional[str] = None) -> AsyncMockType:
         :return: Stub object.
         """
         return cast(
-            unittest.mock.AsyncMock,
+            AsyncMockType,
             self.mock_module.AsyncMock(spec=lambda *args, **kwargs: None, name=name),
         )