diff --git a/packages/jupyter-ai/jupyter_ai/chat_handlers/learn.py b/packages/jupyter-ai/jupyter_ai/chat_handlers/learn.py
index 27a595d62..89770f0d2 100644
--- a/packages/jupyter-ai/jupyter_ai/chat_handlers/learn.py
+++ b/packages/jupyter-ai/jupyter_ai/chat_handlers/learn.py
@@ -267,7 +267,9 @@ async def relearn(self, metadata: IndexMetadata):
         for dir in metadata.dirs:
             # TODO: do not relearn directories in serial, but instead
             # concurrently or in parallel
-            await self.learn_dir(dir.path, dir.chunk_size, dir.chunk_overlap, all_files=False)
+            await self.learn_dir(
+                dir.path, dir.chunk_size, dir.chunk_overlap, all_files=False
+            )
 
         self.save()