diff --git a/backend/tests/unit/test_gdpr.py b/backend/tests/unit/test_gdpr.py
index fd4037c..9b85341 100644
--- a/backend/tests/unit/test_gdpr.py
+++ b/backend/tests/unit/test_gdpr.py
@@ -3,7 +3,6 @@ Unit tests for GDPR data masking utilities (core/gdpr.py).
 No database or HTTP layer required – pure function tests.
 """
 
-
 from app.core.gdpr import mask_email, mask_name, mask_from_header
 
 
diff --git a/backend/tests/unit/test_gmail_labels.py b/backend/tests/unit/test_gmail_labels.py
index 166820b..d7d6c97 100644
--- a/backend/tests/unit/test_gmail_labels.py
+++ b/backend/tests/unit/test_gmail_labels.py
@@ -3,7 +3,6 @@ Unit tests for Gmail label utilities (utils/gmail_labels.py).
 Pure function tests – no database or HTTP layer required.
 """
 
-
 from app.utils.gmail_labels import (
     DEFAULT_IMPORT_LABEL_TEMPLATES,
     MAX_IMPORT_LABELS,