diff --git a/optuna_dashboard/_cli.py b/optuna_dashboard/_cli.py
index f39d3836..59288386 100644
--- a/optuna_dashboard/_cli.py
+++ b/optuna_dashboard/_cli.py
@@ -15,6 +15,7 @@ from . import __version__
 from ._app import create_app
 from ._sql_profiler import register_profiler_view
 
+
 try:
     from typing import Literal
 except ImportError: