diff --git a/abics/__init__.py b/abics/__init__.py
index b7ca06cb..8a124bf6 100644
--- a/abics/__init__.py
+++ b/abics/__init__.py
@@ -1 +1 @@
-__version__ = "2.1-dev"
+__version__ = "2.2.0"
diff --git a/docs/sphinx/en/source/about/info.rst b/docs/sphinx/en/source/about/info.rst
index ab45a30e..036461c9 100644
--- a/docs/sphinx/en/source/about/info.rst
+++ b/docs/sphinx/en/source/about/info.rst
@@ -20,7 +20,7 @@ Developers
 ------------------------------------------
 abICS is developed by the following members.
 
-- ver. 2.0
+- ver. 2.0-
    - Shusuke Kasamatsu (Yamagata University)
    - Yuichi Motoyama (Institute for Solid State Physics, Univ. of Tokyo)
    - Kazuyoshi Yoshimi (Institute for Solid State Physics, Univ. of Tokyo)
@@ -38,6 +38,7 @@ abICS is developed by the following members.
 Version information
 ------------------------------------------
 
+- ver. 2.2.0    : 2024/11/07.
 - ver. 2.1.0    : 2023/06/12.
 - ver. 2.0.1    : 2022/11/04.
 - ver. 2.0      : 2022/06/24.
diff --git a/docs/sphinx/en/source/conf.py b/docs/sphinx/en/source/conf.py
index 49ac7ddc..ff14ccc3 100644
--- a/docs/sphinx/en/source/conf.py
+++ b/docs/sphinx/en/source/conf.py
@@ -58,9 +58,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'2.1'
+version = u'2.2'
 # The full version, including alpha/beta/rc tags.
-release = u'2.1-dev'
+release = u'2.2.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/sphinx/ja/source/about/info.rst b/docs/sphinx/ja/source/about/info.rst
index 51253d10..38414865 100644
--- a/docs/sphinx/ja/source/about/info.rst
+++ b/docs/sphinx/ja/source/about/info.rst
@@ -20,7 +20,7 @@ Quantum Espresso, VASP, OpenMXを利用することができます。
 ------------------------------------------
 abICSは以下のメンバーで開発しています.
 
-- ver. 2.0
+- ver. 2.0-
    - 笠松 秀輔 (山形大学 学術研究院(理学部主担当))
    - 本山 裕一 (東京大学 物性研究所)
    - 青山 龍美 (東京大学 物性研究所)
@@ -39,6 +39,7 @@ abICSは以下のメンバーで開発しています.
 バージョン履歴
 ------------------------------------------
 
+- ver.2.2.0    : 2024/11/07.
 - ver.2.1.0    : 2023/06/12.
 - ver.2.0.1    : 2022/11/04.
 - ver.2.0      : 2022/06/24.
diff --git a/docs/sphinx/ja/source/conf.py b/docs/sphinx/ja/source/conf.py
index 03c4b438..54858f86 100644
--- a/docs/sphinx/ja/source/conf.py
+++ b/docs/sphinx/ja/source/conf.py
@@ -55,9 +55,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'2.1'
+version = u'2.2'
 # The full version, including alpha/beta/rc tags.
-release = u'2.1-dev'
+release = u'2.2.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/pyproject.toml b/pyproject.toml
index 3c88cd1e..6924e9d3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "abics"
-version = "2.1-dev"
+version = "2.2.0"
 description = "ab-Initio Configuration Sampling tool kit"
 authors = ["abICS developers <abics-dev@issp.u-tokyo.ac.jp>"]
 license = "GPL-3.0-or-later"