diff --git a/theme/index.hbs b/theme/index.hbs
index 35ebf83..fdcf5ce 100644
--- a/theme/index.hbs
+++ b/theme/index.hbs
@@ -64,6 +64,15 @@
         <meta property="twitter:title" content="Large Language Math - The Mathematics of LLM Foundational Models - For Beginners">
         <meta property="twitter:description" content="The llmath project is dedicated to demystifying the complex mathematics underpinning Large Language Models (LLM). Our goal is to empower beginners with the necessary mathematical skills and knowledge to contribute to the development of this alien intelligence 👽.">
         <meta property="twitter:image" content="https://llmath.unnservice.com/banner_x1200x600.png">
+        <!-- Google tag (gtag.js) -->
+        <script async src="https://www.googletagmanager.com/gtag/js?id=G-T49SJD62NS"></script>
+        <script>
+            window.dataLayer = window.dataLayer || [];
+            function gtag(){dataLayer.push(arguments);}
+            gtag('js', new Date());
+
+            gtag('config', 'G-T49SJD62NS');
+        </script>
     </head>
     <body class="sidebar-visible no-js">
     <div id="body-container">
