diff --git a/_includes/head.html b/_includes/head.html
index cdcd4215..904ff626 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -25,4 +25,6 @@
 
   <!-- JS -->
   <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/2.0.0/anchor.min.js"></script>
+
+  <meta name="msvalidate.01" content="6DCAF9BA3ED0C6963FA256A4341D5840" />
 </head>