diff --git a/jupyterlab_nvdashboard/tests/test_cpu_handlers.py b/jupyterlab_nvdashboard/tests/test_cpu_handlers.py
index d29dd78..a67f068 100644
--- a/jupyterlab_nvdashboard/tests/test_cpu_handlers.py
+++ b/jupyterlab_nvdashboard/tests/test_cpu_handlers.py
@@ -27,6 +27,7 @@ def handler_args():
         mock_application.settings = mock_settings
         yield mock_application, mock_request
 
+
 def test_cpu_resource_handler(mock_handler, handler_args):
     handler = CPUResourceWebSocketHandler(*handler_args)
     handler.send_data()