diff --git a/themes/default/index.html b/themes/default/index.html
index 5fb4e0e..2172171 100644
--- a/themes/default/index.html
+++ b/themes/default/index.html
@@ -78,13 +78,13 @@
   <script src="fontawesome/js/all.js" data-auto-replace-svg="nest"></script>
   {% if google_analytics_id %}
     <!-- Google tag (gtag.js) -->
-    <script async src="https://www.googletagmanager.com/gtag/js?id=G-S7G4LWWHH8"></script>
+    <script async src="https://www.googletagmanager.com/gtag/js?id={{ google_analytics_id }}"></script>
     <script>
       window.dataLayer = window.dataLayer || [];
       function gtag(){dataLayer.push(arguments);}
       gtag('js', new Date());
 
-      gtag('config', 'G-S7G4LWWHH8');
+      gtag('config', '{{ google_analytics_id }}');
     </script>
   {% endif %}
   <script src="./scripts.js"></script>