diff --git a/docs/sphinx/manual/en/source/conf.py b/docs/sphinx/manual/en/source/conf.py
index 3f51d973..032a7b11 100644
--- a/docs/sphinx/manual/en/source/conf.py
+++ b/docs/sphinx/manual/en/source/conf.py
@@ -34,7 +34,7 @@
 # The short X.Y version.
 version = "2.0"
 # The full version, including alpha/beta/rc tags.
-release = "2.0.0"
+release = "2.0.1"
 
 # for jupyter-notebook
 
diff --git a/docs/sphinx/manual/ja/source/conf.py b/docs/sphinx/manual/ja/source/conf.py
index 52c17190..c2e91660 100644
--- a/docs/sphinx/manual/ja/source/conf.py
+++ b/docs/sphinx/manual/ja/source/conf.py
@@ -28,7 +28,7 @@
 # The short X.Y version.
 version = "2.0"
 # The full version, including alpha/beta/rc tags.
-release = "2.0.0"
+release = "2.0.1"
 
 # -- General configuration ---------------------------------------------------
 
diff --git a/physbo/__init__.py b/physbo/__init__.py
index 032f39a2..b1435725 100644
--- a/physbo/__init__.py
+++ b/physbo/__init__.py
@@ -14,4 +14,4 @@
 from .predictor import base_predictor
 from .variable import variable
 
-__version__ = "2.1.dev"
+__version__ = "2.0.1"
diff --git a/setup.cfg b/setup.cfg
index 0a58bc54..7339eaf6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = physbo
-version = 2.1.dev1
+version = 2.0.1
 description = optimization tool for PHYSics based on Bayesian Optimization
 long_description = file: README.md
 long_description_content_type = text/markdown