diff --git a/optuna_dashboard/_app.py b/optuna_dashboard/_app.py
index bdbfb168..a983d320 100644
--- a/optuna_dashboard/_app.py
+++ b/optuna_dashboard/_app.py
@@ -159,6 +159,8 @@ def create_app(
                 storage=storage, study_name=dst_study_name, directions=src_study.directions
             )
             dst_study.add_trials(src_study.get_trials(deepcopy=False))
+            for key, value in src_study.user_attrs.items():
+                dst_study.set_user_attr(key, value)
             note.copy_notes(storage, src_study, dst_study)
         except DuplicatedStudyError:
             response.status = 400  # Bad request