diff --git a/CHANGES.rst b/CHANGES.rst
index 0c2a34e..8da7257 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,17 @@
 Changelog
 =========
 
+ver 2.9.1
+=========
+
+:date: 2023-11-25 JST
+:base: Reveal.js 5.0.2
+
+Miscellaneous
+-------------
+
+* Mark deprecated into ``google_font`` in ``revealjs-slide`` directive.
+
 ver 2.9.0
 =========
 
diff --git a/demo/index.rst b/demo/index.rst
index 4450f48..e269197 100644
--- a/demo/index.rst
+++ b/demo/index.rst
@@ -7,7 +7,7 @@
 Introduction of sphinx-revealjs
 ===============================
 
-:Based version: 2.9.0
+:Based version: 2.9.1
 :Demo updated: 2022-11-13
 
 Overview
diff --git a/setup.cfg b/setup.cfg
index cc76923..3e4e35c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.9.0
+current_version = 2.9.1
 commit = True
 tag = False
 message = release: Bump version {current_version} -> {new_version}
diff --git a/sphinx_revealjs/__init__.py b/sphinx_revealjs/__init__.py
index 180d388..48b851d 100644
--- a/sphinx_revealjs/__init__.py
+++ b/sphinx_revealjs/__init__.py
@@ -1,6 +1,6 @@
 """Root module for sphinx-revealjs."""
 
-__version__ = "2.9.0"
+__version__ = "2.9.1"
 
 import sys