diff --git a/book.toml b/book.toml
index 83df9b306..9fb817cc8 100644
--- a/book.toml
+++ b/book.toml
@@ -23,6 +23,7 @@ additional-js = [
     "theme/sponsor.js",
     "theme/ai.js"
 ]
+google-analytics = "G-DSTYJWERH0"
 no-section-label = true
 preferred-dark-theme = "hacktricks-dark"
 default-theme = "hacktricks-light"
diff --git a/theme/index.hbs b/theme/index.hbs
index d3b19ffb6..e7e74782b 100644
--- a/theme/index.hbs
+++ b/theme/index.hbs
@@ -343,21 +343,17 @@
         {{/if}}
 
         {{#if google_analytics}}
-        <!-- Google Analytics Tag -->
+        <!-- Google Analytics Tag (GA4) -->
         <script>
-            var localAddrs = ["localhost", "127.0.0.1", ""];
+            window.dataLayer = window.dataLayer || [];
+            function gtag(){dataLayer.push(arguments);}
+            gtag('js', new Date());
+            gtag('config', '{{google_analytics}}');
 
-            // make sure we don't activate google analytics if the developer is
-            // inspecting the book locally...
-            if (localAddrs.indexOf(document.location.hostname) === -1) {
-                (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),
-                m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-                })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
-
-                ga('create', '{{google_analytics}}', 'auto');
-                ga('send', 'pageview');
-            }
+            var gtagScript = document.createElement('script');
+            gtagScript.async = true;
+            gtagScript.src = 'https://www.googletagmanager.com/gtag/js?id={{google_analytics}}';
+            document.head.appendChild(gtagScript);
         </script>
         {{/if}}