diff --git a/documentation/m2e-development-environment.html b/documentation/m2e-development-environment.html
index 5113f05..07c42ce 100644
--- a/documentation/m2e-development-environment.html
+++ b/documentation/m2e-development-environment.html
@@ -31,6 +31,9 @@
   </head>
 
   <body>
+  
+  	<h1 style="border: red solid 2px; background-color: yellow;">⚠️ This page is outdated, use <a href="https://github.com/eclipse-m2e/m2e-core/blob/master/CONTRIBUTING.md">https://github.com/eclipse-m2e/m2e-core/blob/master/CONTRIBUTING.md</a> instead.</h1>
+
     <div class="wrap">
       
             <div class="header">
diff --git a/documentation/m2e-documentation.html b/documentation/m2e-documentation.html
index ebf5ae8..2771e2a 100644
--- a/documentation/m2e-documentation.html
+++ b/documentation/m2e-documentation.html
@@ -100,7 +100,7 @@
     </ul>
     <h4 class="headline">Developers</h2>
     <ul class="unstyled">
-      <li><a href="/m2e/documentation/m2e-development-environment.html">Development Environment Setup</a></li>
+      <li><a href="https://github.com/eclipse-m2e/m2e-core/blob/master/CONTRIBUTING.md">Development Environment Setup</a></li>
     </ul>
     <h4 class="headline">Extension Developers</h2>
     <ul class="unstyled">