diff --git a/shiftregister/app/migrations/0001_initial.py b/shiftregister/app/migrations/0001_initial.py
index 1178937..544b9f2 100644
--- a/shiftregister/app/migrations/0001_initial.py
+++ b/shiftregister/app/migrations/0001_initial.py
@@ -10,63 +10,136 @@ class Migration(migrations.Migration):
 
     initial = True
 
-    dependencies = [
-    ]
+    dependencies = []
 
     operations = [
         migrations.CreateModel(
-            name='Helper',
+            name="Helper",
             fields=[
-                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('phone', phonenumber_field.modelfields.PhoneNumberField(editable=False, max_length=128, region=None, unique=True)),
-                ('name', models.CharField(max_length=200)),
-                ('number_validated', models.BooleanField(default=False)),
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "phone",
+                    phonenumber_field.modelfields.PhoneNumberField(
+                        editable=False, max_length=128, region=None, unique=True
+                    ),
+                ),
+                ("name", models.CharField(max_length=200)),
+                ("number_validated", models.BooleanField(default=False)),
             ],
         ),
         migrations.CreateModel(
-            name='Room',
+            name="Room",
             fields=[
-                ('name', models.CharField(max_length=200, primary_key=True, serialize=False)),
-                ('required_helpers', models.IntegerField()),
+                (
+                    "name",
+                    models.CharField(max_length=200, primary_key=True, serialize=False),
+                ),
+                ("required_helpers", models.IntegerField()),
             ],
         ),
         migrations.CreateModel(
-            name='Shift',
+            name="Shift",
             fields=[
-                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('start_at', models.DateTimeField()),
-                ('duration', models.DurationField()),
-                ('deleted', models.BooleanField(default=False)),
-                ('room', models.ForeignKey(on_delete=django.db.models.deletion.RESTRICT, to='app.room')),
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("start_at", models.DateTimeField()),
+                ("duration", models.DurationField()),
+                ("deleted", models.BooleanField(default=False)),
+                (
+                    "room",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.RESTRICT, to="app.room"
+                    ),
+                ),
             ],
         ),
         migrations.CreateModel(
-            name='Message',
+            name="Message",
             fields=[
-                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('text', models.CharField(max_length=160)),
-                ('created_at', models.DateTimeField(auto_now_add=True)),
-                ('to', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='app.helper')),
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("text", models.CharField(max_length=160)),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                (
+                    "to",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="app.helper"
+                    ),
+                ),
             ],
         ),
         migrations.CreateModel(
-            name='LoginToken',
+            name="LoginToken",
             fields=[
-                ('id', models.CharField(default=shiftregister.app.models.gen_token, editable=False, max_length=20, primary_key=True, serialize=False)),
-                ('sent_at', models.DateTimeField(auto_now_add=True)),
-                ('helper', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='app.helper')),
+                (
+                    "id",
+                    models.CharField(
+                        default=shiftregister.app.models.gen_token,
+                        editable=False,
+                        max_length=20,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                ("sent_at", models.DateTimeField(auto_now_add=True)),
+                (
+                    "helper",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="app.helper"
+                    ),
+                ),
             ],
         ),
         migrations.CreateModel(
-            name='ShiftRegistration',
+            name="ShiftRegistration",
             fields=[
-                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('reminder_sent', models.BooleanField(default=False)),
-                ('helper', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='app.helper')),
-                ('shift', models.ForeignKey(on_delete=django.db.models.deletion.RESTRICT, to='app.shift')),
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("reminder_sent", models.BooleanField(default=False)),
+                (
+                    "helper",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="app.helper"
+                    ),
+                ),
+                (
+                    "shift",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.RESTRICT, to="app.shift"
+                    ),
+                ),
             ],
             options={
-                'unique_together': {('shift', 'helper')},
+                "unique_together": {("shift", "helper")},
             },
         ),
     ]
diff --git a/shiftregister/importer/migrations/0001_initial.py b/shiftregister/importer/migrations/0001_initial.py
index cbe54ad..1d6b6ba 100644
--- a/shiftregister/importer/migrations/0001_initial.py
+++ b/shiftregister/importer/migrations/0001_initial.py
@@ -9,24 +9,41 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('app', '0001_initial'),
+        ("app", "0001_initial"),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='Calendar',
+            name="Calendar",
             fields=[
-                ('url', models.URLField(primary_key=True, serialize=False)),
-                ('has_errors', models.BooleanField(default=False, editable=False)),
+                ("url", models.URLField(primary_key=True, serialize=False)),
+                ("has_errors", models.BooleanField(default=False, editable=False)),
             ],
         ),
         migrations.CreateModel(
-            name='Event',
+            name="Event",
             fields=[
-                ('shift_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, to='app.shift')),
-                ('uuid', models.UUIDField(editable=False, primary_key=True, serialize=False)),
-                ('calendar', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='importer.calendar')),
+                (
+                    "shift_ptr",
+                    models.OneToOneField(
+                        auto_created=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        parent_link=True,
+                        to="app.shift",
+                    ),
+                ),
+                (
+                    "uuid",
+                    models.UUIDField(editable=False, primary_key=True, serialize=False),
+                ),
+                (
+                    "calendar",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="importer.calendar",
+                    ),
+                ),
             ],
-            bases=('app.shift',),
+            bases=("app.shift",),
         ),
     ]