diff --git a/src/datasets_preview_backend/app.py b/src/datasets_preview_backend/app.py
index 2c445a6ee2..34a34ca71e 100644
--- a/src/datasets_preview_backend/app.py
+++ b/src/datasets_preview_backend/app.py
@@ -2,7 +2,12 @@
 from starlette.applications import Starlette
 from starlette.routing import Route
 
-from datasets_preview_backend.config import APP_HOSTNAME, APP_PORT, CACHE_PERSIST, WEB_CONCURRENCY
+from datasets_preview_backend.config import (
+    APP_HOSTNAME,
+    APP_PORT,
+    CACHE_PERSIST,
+    WEB_CONCURRENCY,
+)
 from datasets_preview_backend.routes import (
     CacheStats,
     Configs,