diff --git a/website/war/WEB-INF/appengine-web.xml b/website/war/WEB-INF/appengine-web.xml
index 3376e82b..7d4f9cc8 100644
--- a/website/war/WEB-INF/appengine-web.xml
+++ b/website/war/WEB-INF/appengine-web.xml
@@ -1,6 +1,6 @@
 <appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
     <application>gaelyk</application>
-    <version>212</version>
+    <version>212x</version>
     <threadsafe>true</threadsafe>
     
     <static-files>
diff --git a/website/war/css/main.css b/website/war/css/main.css
index 7cbe6267..32dca996 100644
--- a/website/war/css/main.css
+++ b/website/war/css/main.css
@@ -151,6 +151,10 @@ a:hover {
 
 }
 
+.yourkit {
+    font-size: 0.6em;
+}
+
 .hide-on-screen {
     display: none;
 }
diff --git a/website/war/decorators/decorator.jsp b/website/war/decorators/decorator.jsp
index c2d40357..5dd91926 100644
--- a/website/war/decorators/decorator.jsp
+++ b/website/war/decorators/decorator.jsp
@@ -70,6 +70,13 @@
         <div id="footer">
             <p>&copy; 2009-2014 &mdash; <b>Guillaume Laforge</b> and the <b>Gaelyk development team</b></p>
             <p>Powered by <b>Gaelyk</b> and <b>Groovy</b></p>
+            <p class="yourkit">
+                YourKit supports Gaelyk open source project with its full-featured Java Profiler.
+                YourKit, LLC is the creator of innovative and intelligent tools for profiling
+                Java and .NET applications. Take a look at YourKit's leading software products:
+                <a href="http://www.yourkit.com/java/profiler/index.jsp">YourKit Java Profiler</a> and
+                <a href="http://www.yourkit.com/.net/profiler/index.jsp">YourKit .NET Profiler</a>.
+            </p>
         </div>
     </body>
 </html>