diff --git a/index.html b/index.html
index 409695c..1798f04 100644
--- a/index.html
+++ b/index.html
@@ -29,6 +29,11 @@
   <script src="js/angular.js"></script>
   <script src="js/bootstrap.js"></script>
   <script src="dist/angular-google-analytics.js"></script>
+  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+})(window,document,'script','dataLayer','GTM-KCXPCKF');</script>
   <!-- <script>
     (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
     (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
@@ -43,6 +48,10 @@
 
 <!-- define angular controller -->
 <body ng-controller="mainController">
+<!-- Google Tag Manager (noscript) -->
+<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KCXPCKF"
+ height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+<!-- End Google Tag Manager (noscript) -->
 
   <div id="main">
     <div ng-view></div>    