diff --git a/doc/_layouts/default.html b/doc/_layouts/default.html
index 9a0a765..5af4a29 100644
--- a/doc/_layouts/default.html
+++ b/doc/_layouts/default.html
@@ -9,6 +9,9 @@
 
 {% seo %}
     {% include head-custom.html %}
+
+    <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1753236641153411"
+     crossorigin="anonymous"></script>
   </head>
 
   <!-- Google tag (gtag.js) -->