diff --git a/shiftregister/app/forms.py b/shiftregister/app/forms.py
index 5134d6c..be3e18a 100644
--- a/shiftregister/app/forms.py
+++ b/shiftregister/app/forms.py
@@ -2,6 +2,7 @@ from django import forms
 from .models import Helper
 from phonenumber_field.formfields import PhoneNumberField
 
+
 def text_input(type=None):
     attrs = {"class": "input"}
     if type != None:
diff --git a/shiftregister/app/migrations/0007_alter_helper_phone.py b/shiftregister/app/migrations/0007_alter_helper_phone.py
index 260fe3c..48eb5d2 100644
--- a/shiftregister/app/migrations/0007_alter_helper_phone.py
+++ b/shiftregister/app/migrations/0007_alter_helper_phone.py
@@ -7,13 +7,19 @@ import phonenumber_field.modelfields
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('app', '0006_shift_deleted'),
+        ("app", "0006_shift_deleted"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='helper',
-            name='phone',
-            field=phonenumber_field.modelfields.PhoneNumberField(editable=False, max_length=128, primary_key=True, region=None, serialize=False),
+            model_name="helper",
+            name="phone",
+            field=phonenumber_field.modelfields.PhoneNumberField(
+                editable=False,
+                max_length=128,
+                primary_key=True,
+                region=None,
+                serialize=False,
+            ),
         ),
     ]
diff --git a/shiftregister/app/models.py b/shiftregister/app/models.py
index b479bc9..0b70ba5 100644
--- a/shiftregister/app/models.py
+++ b/shiftregister/app/models.py
@@ -6,6 +6,7 @@ from django.utils import timezone
 from django.db.models import F, Count, Q, ExpressionWrapper
 from phonenumber_field.modelfields import PhoneNumberField
 
+
 class Room(models.Model):
     name = models.CharField(max_length=200, primary_key=True)
     required_helpers = models.IntegerField()
diff --git a/shiftregister/settings.py b/shiftregister/settings.py
index 84773c4..958458d 100644
--- a/shiftregister/settings.py
+++ b/shiftregister/settings.py
@@ -164,4 +164,4 @@ if getenv("SENTRY_DSN"):
         traces_sample_rate=0,
     )
 
-PHONENUMBER_DEFAULT_REGION = "DE"
\ No newline at end of file
+PHONENUMBER_DEFAULT_REGION = "DE"