diff --git a/package-lock.json b/package-lock.json
index c214b85..d3154f3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "espower-typescript",
-  "version": "9.0.0-beta.0",
+  "version": "9.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 64abbf3..b1907d9 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "espower-typescript",
   "description": "power-assert instrumentor for TypeScript",
-  "version": "9.0.0-beta.0",
+  "version": "9.0.0",
   "author": "Teppei Sato <teppeis@gmail.com>",
   "engines": {
     "node": ">=6"