diff --git a/_includes/head.html b/_includes/head.html
index 6159934..bfcce23 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -3,6 +3,7 @@
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta name="robots" content="{{ page.robots | default: site.robots | default: "" }}">
+  <meta name="msvalidate.01" content="DDF472BEC8E65C680D65A24256C33B24" />
   <link rel="icon prefetch" href="{{site.icon}}">
   <title>{% if page.title %}{{ page.title }} ~~ {{ site.title | strip_html }}{% else %}{{ site.title }}{% endif %}</title>
   <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description | strip_html | strip_newlines }}{% endif %}">