diff --git a/optuna_dashboard/_cli.py b/optuna_dashboard/_cli.py
index c9f992a9..9e5749f4 100644
--- a/optuna_dashboard/_cli.py
+++ b/optuna_dashboard/_cli.py
@@ -13,11 +13,11 @@ from bottle import run
 from optuna.storages import BaseStorage
 from optuna.storages import RDBStorage
 
-from optuna_dashboard.artifact.file_system import FileSystemBackend
 from . import __version__
 from ._app import create_app
 from ._app import get_storage
 from ._sql_profiler import register_profiler_view
+from .artifact.file_system import FileSystemBackend
 
 
 if TYPE_CHECKING: