diff --git a/index.html b/index.html
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@@ -163,6 +163,7 @@
                         <li><a href="http://qunitjs.com/" target="_blank">QUnit</a> 2, released under the <a href="http://jquery.org/license" target="_blank">MIT license</a></li>
                         <li>Icons, algorithms and inspiration from <a href="https://github.com/evopedia/evopedia_qt/" target="_blank">Evopedia (Qt version)</a>, released under the <a href="https://www.gnu.org/licenses/" target="_blank">GPL v3 license</a></li>
                         <li>Mediawiki CSS from <a href="http://wikidev.net/" target="_blank">Wikidev</a>, released under the <a href="http://www.gnu.org/copyleft/gpl.html" target="_blank">GPL license</a></li>
+                        <li>Geometry library from <a href="https://github.com/DavidDurman/joint/blob/master/src/geometry.js">JointJS</a>, released under the <a href="https://github.com/DavidDurman/joint/blob/master/LICENSE">Mozilla Public License v2</a> (small additions have been made to this javascript file)</li>
                     </ul>
                     <h3>Other platforms/versions</h3>
                     Other Evopedia clients exist on various platforms. See the official site : <a href="http://www.evopedia.info/" target="_blank">http://www.evopedia.info/</a>