diff --git a/billard/migrations/0020_auto_20170410_1853.py b/billard/migrations/0020_auto_20170410_1853.py
index 901e580..989784c 100644
--- a/billard/migrations/0020_auto_20170410_1853.py
+++ b/billard/migrations/0020_auto_20170410_1853.py
@@ -26,6 +26,7 @@ class Migration(migrations.Migration):
 
     dependencies = [
         ('billard', '0019_merge_20170310_1941'),
+        ('sessions', '0001_initial'),
     ]
     operations = [
         migrations.RunPython(create_default_groups_permissions, delete_default_groups_permissions),