diff --git a/aleksis/core/apps.py b/aleksis/core/apps.py
index 906969c11517fcc34c41456a44457d316364e0b4..b373367efe01bd5e1d470aaeba02eabe92b9b5e5 100644
--- a/aleksis/core/apps.py
+++ b/aleksis/core/apps.py
@@ -21,10 +21,11 @@ class CoreConfig(AppConfig):
         using: str,
         plan: List[Tuple],
         apps: django.apps.registry.Apps,
+        **kwargs,
     ) -> None:
         super().post_migrate(app_config, verbosity, interactive, using, plan, apps)
 
         # Ensure presence of a OTP YubiKey default config
-        apps.get_model('otp_yubikey', 'ValidationService').objects.using(using).update_or_create(
-            name='default', defaults={'use_ssl': True, 'param_sl': '', 'param_timeout': ''}
+        apps.get_model("otp_yubikey", "ValidationService").objects.using(using).update_or_create(
+            name="default", defaults={"use_ssl": True, "param_sl": "", "param_timeout": ""}
         )
diff --git a/aleksis/core/util/apps.py b/aleksis/core/util/apps.py
index 9a294f8ec34d1c1817f3e50c693e0291f741557e..2e4ab1d0a860ac8bceb26d8d14db28136af2f483 100644
--- a/aleksis/core/util/apps.py
+++ b/aleksis/core/util/apps.py
@@ -32,9 +32,7 @@ class AppConfig(django.apps.AppConfig):
 
         # Register system checks of this app
         try:
-            import_module(
-                ".".join(self.__class__.__module__.split(".")[:-1] + ["checks"])
-            )
+            import_module(".".join(self.__class__.__module__.split(".")[:-1] + ["checks"]))
         except ImportError:
             # ImportErrors are non-fatal because checks are optional.
             pass
@@ -44,7 +42,7 @@ class AppConfig(django.apps.AppConfig):
         key: Optional[str] = "",
         old_value: Optional[Any] = None,
         new_value: Optional[Any] = None,
-        **kwargs
+        **kwargs,
     ) -> None:
         """ Called on every app instance if a Constance config chagnes, and once on startup
 
@@ -60,6 +58,7 @@ class AppConfig(django.apps.AppConfig):
         using: str,
         plan: List[Tuple],
         apps: django.apps.registry.Apps,
+        **kwargs,
     ) -> None:
         """ Called on every app instance before its models are migrated
 
@@ -75,6 +74,7 @@ class AppConfig(django.apps.AppConfig):
         using: str,
         plan: List[Tuple],
         apps: django.apps.registry.Apps,
+        **kwargs,
     ) -> None:
         """ Called on every app instance after its models have been migrated