diff --git a/pyproject.toml b/pyproject.toml
index 047ed78..76b9aae 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,6 +64,7 @@ atomic=true
 profile='black'
 line_length=100
 skip_glob=["*/htmlcov/*","*/migrations/*"]
+known_first_party=["for_runners"]
 lines_after_imports=2
 
 
diff --git a/tests/test_django_project.py b/tests/test_django_project.py
index 9d4bfbc..c48af1f 100644
--- a/tests/test_django_project.py
+++ b/tests/test_django_project.py
@@ -39,9 +39,9 @@ class DjangoYnhTestCase(HtmlAssertionMixin, TestCase):
         # TODO: https://github.com/jedie/django-for-runners/issues/25
         # Serve user uploads via django_tools.serve_media_app:
         # assert settings.MEDIA_URL == '/app_path/media/'
-        # assert reverse('serve_media_app:serve-media', kwargs={'user_token': 'token', 'path': 'foo/bar/'}) == (
-        #     '/app_path/media/token/foo/bar/'
-        # )
+        # assert reverse(
+        #     'serve_media_app:serve-media', kwargs={'user_token': 'token', 'path': 'foo/bar/'}
+        # ) == ('/app_path/media/token/foo/bar/')
 
     def test_auth(self):
         # SecurityMiddleware should redirects all non-HTTPS requests to HTTPS:
@@ -51,14 +51,12 @@ class DjangoYnhTestCase(HtmlAssertionMixin, TestCase):
             response,
             status_code=301,  # permanent redirect
             expected_url='https://testserver/app_path/',
-            fetch_redirect_response=False
+            fetch_redirect_response=False,
         )
 
         response = self.client.get('/app_path/', secure=True)
         self.assertRedirects(
-            response,
-            expected_url='/app_path/login/?next=/app_path/',
-            fetch_redirect_response=False
+            response, expected_url='/app_path/login/?next=/app_path/', fetch_redirect_response=False
         )
 
     @override_settings(SECURE_SSL_REDIRECT=False)
@@ -150,7 +148,9 @@ class DjangoYnhTestCase(HtmlAssertionMixin, TestCase):
             path='/app_path/',
             HTTP_REMOTE_USER='test',
             HTTP_AUTH_USER='test',
-            HTTP_AUTHORIZATION=generate_basic_auth(username='foobar', password='test123'),  # <<< wrong user name
+            HTTP_AUTHORIZATION=generate_basic_auth(
+                username='foobar', password='test123'
+            ),  # <<< wrong user name
         )
 
         assert User.objects.count() == 1
diff --git a/tests/test_project_setup.py b/tests/test_project_setup.py
index 2bb75b7..afb09c3 100644
--- a/tests/test_project_setup.py
+++ b/tests/test_project_setup.py
@@ -4,10 +4,11 @@ import shutil
 import subprocess
 from pathlib import Path
 
-import for_runners
 from bx_django_utils.filename import clean_filename
 from bx_py_utils.path import assert_is_dir, assert_is_file
 
+import for_runners
+
 
 PACKAGE_ROOT = Path(__file__).parent.parent