diff --git a/index.html b/index.html
index 5ac92d98..ef575e24 100644
--- a/index.html
+++ b/index.html
@@ -183,8 +183,8 @@
                     <pre class="prettyprint">bower install vis</pre>
                     <h3>link from cdnjs.com</h3>
                     <p>
-                        <a href="https://cdnjs.cloudflare.com/ajax/libs/vis/3.12.0/vis.min.js" target="_blank">vis.min.js</a><br>
-                        <a href="https://cdnjs.cloudflare.com/ajax/libs/vis/3.12.0/vis.min.css" target="_blank">vis.min.css</a>
+                        <a href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.0.0/vis.min.js" target="_blank">vis.min.js</a><br>
+                        <a href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.0.0/vis.min.css" target="_blank">vis.min.css</a>
                     </p>
                     <h3>download</h3>
                     <p>