diff --git a/package-lock.json b/package-lock.json
index 5ae75ac..9cd7d43 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "pdf-merger-js",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "pdf-merger-js",
-      "version": "4.2.0",
+      "version": "4.2.1",
       "license": "MIT",
       "dependencies": {
         "pdf-lib": "^1.17.1"
diff --git a/package.json b/package.json
index 377a49a..404de0a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdf-merger-js",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "merge multiple PDF documents, or parts of them, to a new PDF document",
   "main": "./index.js",
   "types": "./index.d.ts",