diff --git a/docs/api.rst b/docs/api.rst
index 8da91536..18f8bc72 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -44,7 +44,7 @@ Preferential Optimization
    optuna_dashboard.preferential.create_study
    optuna_dashboard.preferential.load_study
    optuna_dashboard.preferential.PreferentialStudy
-   optuna_dashboard._preference_setting.register_preference_feedback_component
+   optuna_dashboard.register_preference_feedback_component
 
 Streamlit
 -----------------
diff --git a/optuna_dashboard/__init__.py b/optuna_dashboard/__init__.py
index 5bb3f301..ea2a8dbe 100644
--- a/optuna_dashboard/__init__.py
+++ b/optuna_dashboard/__init__.py
@@ -14,6 +14,7 @@ from ._form_widget import TextInputWidget  # noqa
 from ._named_objectives import set_objective_names  # noqa
 from ._note import get_note  # noqa
 from ._note import save_note  # noqa
+from ._preference_setting import register_preference_feedback_component  # noqa
 
 
 __version__ = "0.13.0b1"