diff --git a/engine/vibes_auth/admin_site.py b/engine/vibes_auth/admin_site.py
index 4a8b75ac..7e833ca4 100644
--- a/engine/vibes_auth/admin_site.py
+++ b/engine/vibes_auth/admin_site.py
@@ -48,14 +48,15 @@ class SchonAdminSite(UnfoldAdminSite):
 
         return super().login(request, extra_context)
 
-    def extra_urls(self):
-        return [
+    def get_urls(self):
+        custom_urls = [
             path(
                 "verify-otp/",
                 self.verify_otp_view,
                 name="verify-otp",
             ),
         ]
+        return custom_urls + super().get_urls()
 
     def verify_otp_view(self, request: HttpRequest) -> HttpResponse:
         from engine.vibes_auth.models import AdminOTPCode, User
diff --git a/engine/vibes_auth/apps.py b/engine/vibes_auth/apps.py
index bb611749..ad9a7869 100644
--- a/engine/vibes_auth/apps.py
+++ b/engine/vibes_auth/apps.py
@@ -11,12 +11,9 @@ class VibesAuthConfig(AppConfig):
     hide = False
 
     def ready(self) -> None:
-        from django.contrib import admin  # noqa: E402
-        from django.contrib.admin import sites  # noqa: E402
+        from django.contrib import admin
 
         import engine.vibes_auth.signals  # noqa: F401
-        from engine.vibes_auth.admin_site import SchonAdminSite  # noqa: E402
+        from engine.vibes_auth.admin_site import SchonAdminSite
 
-        site = SchonAdminSite()
-        admin.site = site
-        sites.site = site
+        admin.site.__class__ = SchonAdminSite