diff --git a/apps/slack_rag.py b/apps/slack_rag.py
index 5862688..c3cc0fc 100644
--- a/apps/slack_rag.py
+++ b/apps/slack_rag.py
@@ -28,7 +28,7 @@ class SlackMCPRAG(BaseRAGExample):
         super().__init__(
             name="Slack MCP RAG",
             description="RAG application for Slack messages via MCP servers",
-            default_index_name="slack_messages"
+            default_index_name="slack_messages",
         )
 
     def _add_specific_arguments(self, parser: argparse.ArgumentParser):
diff --git a/apps/twitter_rag.py b/apps/twitter_rag.py
index 6f12809..a7fd3a4 100644
--- a/apps/twitter_rag.py
+++ b/apps/twitter_rag.py
@@ -28,7 +28,7 @@ class TwitterMCPRAG(BaseRAGExample):
         super().__init__(
             name="Twitter MCP RAG",
             description="RAG application for Twitter bookmarks via MCP servers",
-            default_index_name="twitter_bookmarks"
+            default_index_name="twitter_bookmarks",
         )
 
     def _add_specific_arguments(self, parser: argparse.ArgumentParser):