diff --git a/server/vbv_lernwelt/course/migrations/0005_alter_coursesession_attendance_days.py b/server/vbv_lernwelt/course/migrations/0005_alter_coursesession_attendance_days.py
index 912f13e9..98f541e2 100644
--- a/server/vbv_lernwelt/course/migrations/0005_alter_coursesession_attendance_days.py
+++ b/server/vbv_lernwelt/course/migrations/0005_alter_coursesession_attendance_days.py
@@ -1,19 +1,19 @@
 # Generated by Django 3.2.13 on 2023-04-25 12:28
 
-from django.db import migrations
 import django_jsonform.models.fields
+from django.db import migrations
 
 
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('course', '0004_coursesession_assignment_details_list'),
+        ("course", "0004_coursesession_assignment_details_list"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='coursesession',
-            name='attendance_days',
+            model_name="coursesession",
+            name="attendance_days",
             field=django_jsonform.models.fields.JSONField(),
         ),
     ]
diff --git a/server/vbv_lernwelt/course/models.py b/server/vbv_lernwelt/course/models.py
index 000ff413..6e9475f6 100644
--- a/server/vbv_lernwelt/course/models.py
+++ b/server/vbv_lernwelt/course/models.py
@@ -2,8 +2,8 @@ from django.db import models
 from django.db.models import UniqueConstraint
 from django.utils.text import slugify
 from django.utils.translation import gettext_lazy as _
-from wagtail.models import Page
 from django_jsonform.models.fields import JSONField
+from wagtail.models import Page
 
 from vbv_lernwelt.core.model_utils import find_available_slug
 from vbv_lernwelt.core.models import User