diff --git a/package-lock.json b/package-lock.json
index 3b936f7..ce256d9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "arx-header-size",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "arx-header-size",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "license": "GPL-3.0-or-later",
       "dependencies": {
         "minimist-lite": "^2.2.1"
diff --git a/package.json b/package.json
index 9a3fc81..c350386 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "arx-header-size",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Returns the header size for Arx Fatalis files with dynamic headers",
   "main": "src/index.js",
   "types": "src/index.d.ts",