diff --git a/tests/conftest.py b/tests/conftest.py
index d3388dd0594..4cb8154fad2 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -723,7 +723,7 @@ def factory() -> str:
     return factory
 
 
-@pytest.fixture
+@pytest.fixture(scope="session")
 def mock_server() -> Iterator[MockServer]:
     server = make_mock_server()
     test_server = MockServer(server)
diff --git a/tests/unit/test_network_lazy_wheel.py b/tests/unit/test_network_lazy_wheel.py
index 356387d2bba..1a6f6686e15 100644
--- a/tests/unit/test_network_lazy_wheel.py
+++ b/tests/unit/test_network_lazy_wheel.py
@@ -25,12 +25,12 @@
 }
 
 
-@pytest.fixture
+@pytest.fixture(scope="session")
 def session() -> PipSession:
     return PipSession()
 
 
-@pytest.fixture
+@pytest.fixture(scope="session")
 def mypy_whl_no_range(mock_server: MockServer, shared_data: TestData) -> Iterator[str]:
     mypy_whl = shared_data.packages / "mypy-0.782-py3-none-any.whl"
     mock_server.set_responses([file_response(mypy_whl)])