diff --git a/CHANGES.rst b/CHANGES.rst
index 2173eca..12e8a40 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,6 +4,28 @@ Changes
 Unreleased
 ----------
 
+Version 2.3.0
+-------------
+
+Released 2023-02-18
+
+- Remove unused log. `#355 <https://github.com/dajiaji/python-cwt/pull/355>`__
+- Change HPKE sender information from dict to list. `#354 <https://github.com/dajiaji/python-cwt/pull/354>`__
+- Add SECURITY.md. `#352 <https://github.com/dajiaji/python-cwt/pull/352>`__
+- Remove unused function in CBORProcessor. `#333 <https://github.com/dajiaji/python-cwt/pull/333>`__
+- Fix link to readthedocs. `#326 <https://github.com/dajiaji/python-cwt/pull/326>`__
+- Update dependencies.
+    - Bump cryptography from 39.0.1. `#357 <https://github.com/dajiaji/python-cwt/pull/357>`__
+    - Bump pyhpke from 0.4.1. `#356 <https://github.com/dajiaji/python-cwt/pull/356>`__
+- Update dev dependencies.
+    - Bump sphinx-rtd-theme to 1.2.0. `#351 <https://github.com/dajiaji/python-cwt/pull/351>`__
+    - Bump tox to 4.4.5. `#350 <https://github.com/dajiaji/python-cwt/pull/350>`__
+    - Bump pre-commit/black to 23.1.0. `#349 <https://github.com/dajiaji/python-cwt/pull/349>`__
+    - Bump pre-commit/isort to 5.12.0. `#346 <https://github.com/dajiaji/python-cwt/pull/346>`__
+    - Bump pre-commit/blacken-docs to 1.13.0. `#341 <https://github.com/dajiaji/python-cwt/pull/341>`__
+    - Bump sphinx-autodoc-typehints to 1.21.0. `#340 <https://github.com/dajiaji/python-cwt/pull/340>`__
+    - Bump pytest to 7.2.1. `#338 <https://github.com/dajiaji/python-cwt/pull/338>`__
+
 Version 2.2.0
 -------------
 
diff --git a/cwt/__init__.py b/cwt/__init__.py
index b745506..cf5b2f1 100644
--- a/cwt/__init__.py
+++ b/cwt/__init__.py
@@ -18,7 +18,7 @@
 from .recipient import Recipient
 from .signer import Signer
 
-__version__ = "2.2.0"
+__version__ = "2.3.0"
 __title__ = "cwt"
 __description__ = "A Python implementation of CWT/COSE"
 __url__ = "https://python-cwt.readthedocs.io"
diff --git a/pyproject.toml b/pyproject.toml
index 8cf823e..a0ed85a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "cwt"
-version = "2.2.0"
+version = "2.3.0"
 description = "A Python implementation of CWT/COSE."
 authors = ["Ajitomi Daisuke <dajiaji@gmail.com>"]
 license = "MIT"