diff --git a/pyproject.toml b/pyproject.toml
@@ -26,7 +26,6 @@ module = [
     "gitlab.v4.objects.sidekiq",
     "tests.functional.*",
     "tests.functional.api.*",
-    "tests.meta.*",
     "tests.unit.*",
     "tests.smoke.*"
 ]

diff --git a/requirements-lint.txt b/requirements-lint.txt
@@ -2,6 +2,8 @@ black==20.8b1
 flake8==4.0.1
 isort==5.10.1
 mypy==0.910
+pytest
 types-PyYAML==6.0.1
 types-requests==2.26.0
 types-setuptools==57.4.2
+types-toml==0.10.1
diff --git a/tests/meta/test_ensure_type_hints.py b/tests/meta/test_ensure_type_hints.py
@@ -7,13 +7,14 @@
 import inspect
 from typing import Tuple, Type
 
+import _pytest
 import toml
 
 import gitlab.mixins
 import gitlab.v4.objects
 
 
-def pytest_generate_tests(metafunc):
+def pytest_generate_tests(metafunc: _pytest.python.Metafunc) -> None:
     """Find all of the classes in gitlab.v4.objects and pass them to our test
     function"""
 
@@ -54,7 +55,7 @@ def pytest_generate_tests(metafunc):
 
 
 class TestTypeHints:
-    def test_check_get_function_type_hints(self, class_info: Tuple[str, Type]):
+    def test_check_get_function_type_hints(self, class_info: Tuple[str, Type]) -> None:
         """Ensure classes derived from GetMixin have defined a 'get()' method with
         correct type-hints.
         """

diff --git a/tests/meta/test_mro.py b/tests/meta/test_mro.py
@@ -49,7 +49,7 @@ class Wrongv4Object(RESTObject, Mixin):
 import gitlab.v4.objects
 
 
-def test_show_issue():
+def test_show_issue() -> None:
     """Test case to demonstrate the TypeError that occurs"""
 
     class RESTObject(object):
@@ -61,7 +61,7 @@ class Mixin(RESTObject):
 
     with pytest.raises(TypeError) as exc_info:
         # Wrong ordering here
-        class Wrongv4Object(RESTObject, Mixin):
+        class Wrongv4Object(RESTObject, Mixin):  # type: ignore
             ...
 
     # The error message in the exception should be:
@@ -76,7 +76,7 @@ class Correctv4Object(Mixin, RESTObject):
         ...
 
 
-def test_mros():
+def test_mros() -> None:
     """Ensure objects defined in gitlab.v4.objects have REST* as last item in
     class definition.