diff --git a/abrechnung/application/transactions.py b/abrechnung/application/transactions.py
index f6f151bf..24fa5a78 100644
--- a/abrechnung/application/transactions.py
+++ b/abrechnung/application/transactions.py
@@ -1164,7 +1164,6 @@ async def sync_transaction(
     async def sync_transactions(
         self, *, user: User, group_id: int, transactions: list[RawTransaction]
     ) -> dict[int, int]:
-
         all_transactions_in_same_group = all(
             [a.group_id == group_id for a in transactions]
         )
diff --git a/tests/test_transaction_logic.py b/tests/test_transaction_logic.py
index 28b81a7a..8d609354 100644
--- a/tests/test_transaction_logic.py
+++ b/tests/test_transaction_logic.py
@@ -183,7 +183,10 @@ async def test_file_upload(self):
         self.assertEqual(file_id, transaction.committed_files[0].id)
         self.assertIsNotNone(transaction.committed_files[0].blob_id)
 
-        (mime_type, _,) = await self.transaction_service.read_file_contents(
+        (
+            mime_type,
+            _,
+        ) = await self.transaction_service.read_file_contents(
             user=self.user,
             file_id=file_id,
             blob_id=transaction.committed_files[0].blob_id,