diff --git a/package-lock.json b/package-lock.json
index 20fd723..4c3cf33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "omusubi-js",
-  "version": "1.1.2",
+  "version": "2.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index b43268b..039f826 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "omusubi-js",
-  "version": "1.1.2",
+  "version": "2.0.0",
   "description": "",
   "main": "main.js",
   "directories": {