diff --git a/package-lock.json b/package-lock.json
index c40a42e..1bde8a2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@kaisukez/cancellation-token",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@kaisukez/cancellation-token",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "license": "MIT",
       "devDependencies": {
         "@types/jest": "^27.4.0",
diff --git a/package.json b/package.json
index ff44e51..b2f6fe1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kaisukez/cancellation-token",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "This library provides you ability to cancel async function",
   "author": "Nattapon Chantasiriworawat <nattapon.ctsr@gmail.com>",
   "license": "MIT",