diff --git a/nextcloud_mcp_server/client.py b/nextcloud_mcp_server/client.py
index df9d6c2..2cb1dd6 100644
--- a/nextcloud_mcp_server/client.py
+++ b/nextcloud_mcp_server/client.py
@@ -304,7 +304,9 @@ class NextcloudClient:
 
         return score
 
-    async def _cleanup_old_attachment_directory(self, *, note_id: int, old_category: str):
+    async def _cleanup_old_attachment_directory(
+        self, *, note_id: int, old_category: str
+    ):
         """
         Clean up the attachment directory for a note in its old category location.
         Called after a category change to prevent orphaned directories.
@@ -317,7 +319,9 @@ class NextcloudClient:
 
         logger.info(f"Cleaning up old attachment directory: {old_attachment_dir_path}")
         try:
-            delete_result = await self.delete_webdav_resource(path=old_attachment_dir_path)
+            delete_result = await self.delete_webdav_resource(
+                path=old_attachment_dir_path
+            )
             logger.info(f"Cleanup of old attachment directory result: {delete_result}")
             return delete_result
         except Exception as e:
@@ -444,7 +448,9 @@ class NextcloudClient:
             )
             try:
                 # delete_webdav_resource expects path relative to user's files dir
-                delete_result = await self.delete_webdav_resource(path=attachment_dir_path)
+                delete_result = await self.delete_webdav_resource(
+                    path=attachment_dir_path
+                )
                 logger.info(
                     f"WebDAV deletion for category '{cat}' attachment directory: {delete_result}"
                 )
diff --git a/tests/conftest.py b/tests/conftest.py
index dc5bb45..94c47fe 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -72,7 +72,9 @@ async def temporary_note(nc_client: NextcloudClient):
 
 
 @pytest.fixture
-async def temporary_note_with_attachment(nc_client: NextcloudClient, temporary_note: dict):
+async def temporary_note_with_attachment(
+    nc_client: NextcloudClient, temporary_note: dict
+):
     """
     Fixture that creates a temporary note, adds an attachment, and cleans up both.
     Yields a tuple: (note_data, attachment_filename, attachment_content).
diff --git a/tests/integration/test_notes_api.py b/tests/integration/test_notes_api.py
index 278dd45..6f8d8db 100644
--- a/tests/integration/test_notes_api.py
+++ b/tests/integration/test_notes_api.py
@@ -15,7 +15,9 @@ pytestmark = pytest.mark.integration
 
 
 @pytest.mark.asyncio
-async def test_notes_api_create_and_read(nc_client: NextcloudClient, temporary_note: dict):
+async def test_notes_api_create_and_read(
+    nc_client: NextcloudClient, temporary_note: dict
+):
     """
     Tests creating a note via the API (using fixture) and then reading it back.
     """
@@ -73,7 +75,9 @@ async def test_notes_api_update(nc_client: NextcloudClient, temporary_note: dict
 
 
 @pytest.mark.asyncio
-async def test_notes_api_update_conflict(nc_client: NextcloudClient, temporary_note: dict):
+async def test_notes_api_update_conflict(
+    nc_client: NextcloudClient, temporary_note: dict
+):
     """
     Tests that attempting to update with an old etag fails with 412.
     """
@@ -140,7 +144,9 @@ async def test_notes_api_append_content_to_existing_note(
     append_text = f"Appended content {uuid.uuid4().hex[:8]}"
 
     logger.info(f"Appending content to note ID: {note_id}")
-    updated_note = await nc_client.notes_append_content(note_id=note_id, content=append_text)
+    updated_note = await nc_client.notes_append_content(
+        note_id=note_id, content=append_text
+    )
     logger.info(f"Note after append: {updated_note}")
 
     # Verify the note was updated
@@ -219,7 +225,9 @@ async def test_notes_api_append_content_multiple_times(
     logger.info(f"Performing multiple appends to note ID: {note_id}")
 
     # First append
-    updated_note = await nc_client.notes_append_content(note_id=note_id, content=first_append)
+    updated_note = await nc_client.notes_append_content(
+        note_id=note_id, content=first_append
+    )
 
     expected_content_after_first = original_content + "\n---\n" + first_append
     assert updated_note["content"] == expected_content_after_first