diff --git a/authens/forms.py b/authens/forms.py
index 55ab14c..08fcc22 100644
--- a/authens/forms.py
+++ b/authens/forms.py
@@ -9,8 +9,7 @@ def promo_choices():
 
 
 class OldCASAuthForm(forms.Form):
-    """ Adapts Django's AuthenticationForm to allow for OldCAS login.
-    """
+    """Adapts Django's AuthenticationForm to allow for OldCAS login."""
 
     cas_login = auth_forms.UsernameField(
         label=_("Ancien login clipper"), max_length=1023
diff --git a/authens/models.py b/authens/models.py
index eba5769..a1cbd25 100644
--- a/authens/models.py
+++ b/authens/models.py
@@ -21,7 +21,10 @@ class CASAccount(models.Model):
         related_name="cas_account",
     )
     cas_login = models.CharField(
-        verbose_name=_("login CAS"), max_length=1023, blank=False, unique=True,
+        verbose_name=_("login CAS"),
+        max_length=1023,
+        blank=False,
+        unique=True,
     )
     entrance_year = models.SmallIntegerField(
         verbose_name=_("année de création du compte CAS"), blank=False, null=False
@@ -68,7 +71,8 @@ class OldCASAccount(models.Model):
         # `unique_together` to be deprecated soon : we use `constraints`
         constraints = [
             models.UniqueConstraint(
-                fields=["cas_login", "entrance_year"], name="clipper_year_uniqueness",
+                fields=["cas_login", "entrance_year"],
+                name="clipper_year_uniqueness",
             )
         ]
         verbose_name = _("Ancien compte CAS")
diff --git a/example_site/example_site/settings.py b/example_site/example_site/settings.py
index 8ec4365..290af94 100644
--- a/example_site/example_site/settings.py
+++ b/example_site/example_site/settings.py
@@ -88,9 +88,15 @@ AUTH_PASSWORD_VALIDATORS = [
     {
         "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
     },
-    {"NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",},
-    {"NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",},
-    {"NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",},
+    {
+        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
+    },
+    {
+        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
+    },
+    {
+        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
+    },
 ]