diff --git a/ChangeLog b/ChangeLog
index c30483f..0bb961e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+chmpx (1.0.21) unstable; urgency=low
+
+  * Changed supported OS and NodeJS version - #47
+
+ -- Takeshi Nakatani <ggtakec@gmail.com>  Thu, 21 Nov 2024 17:00:04 +0900
+
 chmpx (1.0.20) unstable; urgency=low
 
   * Updated github actions tools and dependencies - #45
diff --git a/package.json b/package.json
index 0e3f087..6076c3e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "chmpx",
-  "version": "1.0.20",
+  "version": "1.0.21",
   "description": "CHMPX addon library for Node.js",
   "os": "linux",
   "main": "index.js",