diff --git a/qlib/workflow/cli.py b/qlib/workflow/cli.py
index 7cce25809..b257d9237 100644
--- a/qlib/workflow/cli.py
+++ b/qlib/workflow/cli.py
@@ -9,7 +9,7 @@ import fire
 import pandas as pd
 import ruamel.yaml as yaml
 from qlib.config import REG_CN
-from qlib.utils import init_instance_by_config
+from qlib.utils import init_instance_by_config, flatten_dict
 from qlib.workflow import R
 from qlib.workflow.record_temp import SignalRecord