diff --git a/jenkins.js b/jenkins.js
index d280609..37c1969 100644
--- a/jenkins.js
+++ b/jenkins.js
@@ -1,10 +1,3 @@
-/*
- * Copyright (C) Sapphirecode - All Rights Reserved
- * This file is part of utilities which is released under MIT.
- * See file 'LICENSE' for full license details.
- * Created by Timo Hocker <timo@scode.ovh>, May 2020
- */
-
 /* eslint-disable */
 
 'use strict';
@@ -33,12 +26,12 @@ if (typeof pkg.repository === 'undefined') {
 }
 
 function major (version) {
-  return version.replace (/\.[0-9]+$/ui, '');
+  return version.replace (/\.[0-9x]+$/ui, '');
 }
 
 if (fs.existsSync ('README.md')) {
   const readme = fs.readFileSync ('README.md', 'utf-8');
-  const version = (/version: ([0-9.]+)/ui).exec (readme);
+  const version = (/version: ([0-9x.]+)/ui).exec (readme);
   if (
     version === null
     || major (version[1]) !== major (pkg.version)