diff --git a/package-lock.json b/package-lock.json
index 571fad4..a7939f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "kontonummer",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "kontonummer",
-      "version": "3.0.0",
+      "version": "4.0.0",
       "license": "MIT",
       "devDependencies": {
         "@types/mocha": "^10.0.1",
diff --git a/package.json b/package.json
index 9aa4440..59e82d2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "kontonummer",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "A validator for swedish banking numbers",
   "author": "Svante Bengtson <svante@swantzter.se> (https://swantzter.se)",
   "license": "MIT",