diff --git a/package-lock.json b/package-lock.json
index febd90f..7e8c89d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "string-literal-list",
-  "version": "1.27.0",
+  "version": "1.28.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "string-literal-list",
-      "version": "1.27.0",
+      "version": "1.28.0",
       "license": "MIT",
       "devDependencies": {
         "@types/node": "latest",
diff --git a/package.json b/package.json
index 9e5ae11..ea24b22 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "string-literal-list",
-  "version": "1.27.0",
+  "version": "1.28.0",
   "description": "an array for string literal",
   "main": "stringList.cjs",
   "module": "stringList.js",