diff --git a/django-stubs/contrib/admin/sites.pyi b/django-stubs/contrib/admin/sites.pyi
index 7601e2e..2227f87 100644
--- a/django-stubs/contrib/admin/sites.pyi
+++ b/django-stubs/contrib/admin/sites.pyi
@@ -63,6 +63,7 @@ class AdminSite:
     def i18n_javascript(self, request: WSGIRequest, extra_context: Optional[Dict[Any, Any]] = ...) -> HttpResponse: ...
     def logout(self, request: WSGIRequest, extra_context: Optional[Dict[str, Any]] = ...) -> TemplateResponse: ...
     def login(self, request: WSGIRequest, extra_context: Optional[Dict[str, Any]] = ...) -> HttpResponse: ...
+    def _build_app_dict(self, request: WSGIRequest, label: Optional[str] = ...) -> Dict[str, Any]: ...
     def get_app_list(self, request: WSGIRequest) -> List[Any]: ...
     def index(self, request: WSGIRequest, extra_context: Optional[Dict[str, Any]] = ...) -> TemplateResponse: ...
     def app_index(