diff --git a/src/_includes/head.html b/src/_includes/head.html
index 7ba782fd0..2344b8970 100644
--- a/src/_includes/head.html
+++ b/src/_includes/head.html
@@ -1,4 +1,11 @@
 <head>
+  <!-- Google Tag Manager -->
+  <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-5V5GBX4');</script>
+  <!-- End Google Tag Manager -->
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
diff --git a/src/_layouts/default.html b/src/_layouts/default.html
index e154ad3c4..cd8aec142 100644
--- a/src/_layouts/default.html
+++ b/src/_layouts/default.html
@@ -4,6 +4,10 @@
 {% include head.html %}
 
 <body>
+  <!-- Google Tag Manager (noscript) -->
+  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5V5GBX4"
+  height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+  <!-- End Google Tag Manager (noscript) -->
 
   {% include header.html %}
 
