diff --git a/optuna_dashboard/__init__.py b/optuna_dashboard/__init__.py
index 493af7362..5bb3f301f 100644
--- a/optuna_dashboard/__init__.py
+++ b/optuna_dashboard/__init__.py
@@ -16,4 +16,4 @@
 from ._note import save_note  # noqa
 
 
-__version__ = "0.12.0"
+__version__ = "0.13.0b1"