diff --git a/backend/open_webui/retrieval/loaders/main.py b/backend/open_webui/retrieval/loaders/main.py
index ae22f13df..d392088c7 100644
--- a/backend/open_webui/retrieval/loaders/main.py
+++ b/backend/open_webui/retrieval/loaders/main.py
@@ -76,7 +76,7 @@ known_source_ext = [
     "jsx",
     "hs",
     "lhs",
-    "json"
+    "json",
 ]