diff --git a/README.md b/README.md
index 959e6f3..d62e089 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 1
     steps:
-      - uses: mechiru/chatwork@v1
+      - uses: mechiru/chatwork@v2
         with:
           roomId: 123
           token: ${{ secrets.CHATWORK_API_TOKEN }}
diff --git a/package-lock.json b/package-lock.json
index 00cdc3b..e2c2692 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
   "name": "chatwork",
-  "version": "1.0.3",
+  "version": "2.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "1.0.3",
+      "version": "2.0.0",
       "license": "MIT",
       "dependencies": {
         "@actions/core": "^1.2.6"
diff --git a/package.json b/package.json
index 0b2d027..4aecf95 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "chatwork",
-  "version": "1.0.3",
+  "version": "2.0.0",
   "private": true,
   "description": "Send event to the chatwork",
   "main": "lib/main.js",