diff --git a/exhibitors/migrations/0001_initial.py b/exhibitors/migrations/0001_initial.py
index 0129a33..a2401c2 100644
--- a/exhibitors/migrations/0001_initial.py
+++ b/exhibitors/migrations/0001_initial.py
@@ -11,7 +11,7 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('pretixbase', '0004_create_customer_table'),
+        ('pretixbase', '0001_initial'),
     ]
 
     operations = [
diff --git a/exhibitors/migrations/0002_alter_exhibitorinfo_lead_scanning_enabled_and_more.py b/exhibitors/migrations/0002_alter_exhibitorinfo_lead_scanning_enabled_and_more.py
index 7b1c372..74da9d2 100644
--- a/exhibitors/migrations/0002_alter_exhibitorinfo_lead_scanning_enabled_and_more.py
+++ b/exhibitors/migrations/0002_alter_exhibitorinfo_lead_scanning_enabled_and_more.py
@@ -7,7 +7,7 @@
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('pretixbase', '0004_create_customer_table'),
+        ('pretixbase', '0001_initial'),
         ('exhibitors', '0001_initial'),
     ]
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 9ffe32d..14a9169 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,5 @@
 import pytest
+
 from django.utils.timezone import now
 from pretix.base.models import Event, Organizer
 
diff --git a/tests/test_main.py b/tests/test_main.py
index ff97695..c14267b 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1,4 +1,5 @@
 import pytest
+
 from django.core.files.uploadedfile import SimpleUploadedFile
 
 from exhibitors.models import ExhibitorInfo