diff --git a/src/index.html b/src/index.html
index 24d904d..a450474 100755
--- a/src/index.html
+++ b/src/index.html
@@ -22,6 +22,7 @@
       </script>
     <![endif]-->
 
+  <script src="https://cdn.optimizely.com/js/7577170144.js"></script>
   <link href="https://fonts.googleapis.com/css?family=Roboto:500,300,400" rel="stylesheet" type="text/css">
   <script>
     (function(i, s, o, g, r, a, m) {
diff --git a/src/welcome.html b/src/welcome.html
index 151c588..12f3dec 100644
--- a/src/welcome.html
+++ b/src/welcome.html
@@ -21,7 +21,7 @@
         src="http://html5shiv.googlecode.com/svn/trunk/html5.js">
       </script>
     <![endif]-->
-
+  <script src="https://cdn.optimizely.com/js/7577170144.js"></script>
   <link href="https://fonts.googleapis.com/css?family=Roboto:500,300,400" rel="stylesheet" type="text/css">
   <script>
     (function(i, s, o, g, r, a, m) {