diff --git a/packages/leann-backend-diskann/leann_backend_diskann/diskann_backend.py b/packages/leann-backend-diskann/leann_backend_diskann/diskann_backend.py
index 07d7dbd..192c4c2 100644
--- a/packages/leann-backend-diskann/leann_backend_diskann/diskann_backend.py
+++ b/packages/leann-backend-diskann/leann_backend_diskann/diskann_backend.py
@@ -477,6 +477,7 @@ class DiskannSearcher(BaseSearcher):
         # Force garbage collection to ensure C++ objects are destroyed
         try:
             import gc
+
             gc.collect()
         except Exception:
             pass
diff --git a/tests/conftest.py b/tests/conftest.py
index 0fa1503..a4f178d 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -39,4 +39,3 @@ def cleanup_session():
     except Exception:
         # Don't fail tests due to cleanup errors
         pass
-