diff --git a/biscuit/core/tests/browser/test_selenium.py b/biscuit/core/tests/browser/test_selenium.py
index fcfa478a9da4adbde6de651450425fc978a3851a..4fff999cab330c75c6166b55307919f682970d4f 100644
--- a/biscuit/core/tests/browser/test_selenium.py
+++ b/biscuit/core/tests/browser/test_selenium.py
@@ -6,7 +6,6 @@ from django.urls import reverse
 
 import pytest
 
-
 pytestmark = pytest.mark.django_db
 
 SeleniumTestCaseBase.external_host = os.environ.get("TEST_HOST", "") or None
diff --git a/biscuit/core/tests/models/test_person.py b/biscuit/core/tests/models/test_person.py
index afe29db35a8b62c65ca251aa348b8c52e14e64f9..62861ae1d82b7359080b653049038c9e142a7a27 100644
--- a/biscuit/core/tests/models/test_person.py
+++ b/biscuit/core/tests/models/test_person.py
@@ -2,7 +2,6 @@ import pytest
 
 from biscuit.core.models import Person
 
-
 pytestmark = pytest.mark.django_db
 
 
diff --git a/biscuit/core/tests/views/test_account.py b/biscuit/core/tests/views/test_account.py
index 5fd9dbf8e33a2cd61d17a14e4d752326677b4e71..48cf07028fb2ae232a6b1018550a23e8edb04ff4 100644
--- a/biscuit/core/tests/views/test_account.py
+++ b/biscuit/core/tests/views/test_account.py
@@ -3,7 +3,6 @@ from django.urls import reverse
 
 import pytest
 
-
 pytestmark = pytest.mark.django_db