diff --git a/docs/index.html b/docs/index.html
index d51b7e9..7f4cf42 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -7,6 +7,13 @@
     <link rel="stylesheet" href="style.css">
     <link rel="shortcut icon" href="favicon.ico">
     <script type="text/javascript" src="index.js"></script>
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-KKHH0F88Y4"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+      gtag('config', 'G-KKHH0F88Y4', { 'anonymize_ip': true });
+    </script>
   </head>
   <body>
     <main>
