diff --git a/jupyter_events/logger.py b/jupyter_events/logger.py
index 84194a8..98955ae 100644
--- a/jupyter_events/logger.py
+++ b/jupyter_events/logger.py
@@ -14,7 +14,6 @@
 
 from jsonschema import ValidationError
 from packaging.version import parse
-
 from traitlets import Dict, Instance, Set, default
 from traitlets.config import Config, LoggingConfigurable
 
diff --git a/tests/test_logger.py b/tests/test_logger.py
index 9b794af..28a8fc6 100644
--- a/tests/test_logger.py
+++ b/tests/test_logger.py
@@ -3,7 +3,6 @@
 import io
 import json
 import logging
-import sys
 from datetime import datetime, timedelta, timezone
 from unittest.mock import MagicMock