diff --git a/promo_code/business/__init__.py b/promo_code/business/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/promo_code/business/apps.py b/promo_code/business/apps.py
new file mode 100644
index 0000000..7397685
--- /dev/null
+++ b/promo_code/business/apps.py
@@ -0,0 +1,6 @@
+import django.apps
+
+
+class BusinessConfig(django.apps.AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'business'
diff --git a/promo_code/business/migrations/__init__.py b/promo_code/business/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/promo_code/promo_code/settings.py b/promo_code/promo_code/settings.py
index 40b4c34..560c10d 100644
--- a/promo_code/promo_code/settings.py
+++ b/promo_code/promo_code/settings.py
@@ -41,6 +41,7 @@ def load_bool(name, default):
     'rest_framework_simplejwt',
     'rest_framework_simplejwt.token_blacklist',
     #
+    'business.apps.BusinessConfig',
     'core.apps.CoreConfig',
     'user.apps.UserConfig',
 ]