diff --git a/layouts/partials/header.html b/layouts/partials/header.html
index a28a851..dfeee42 100644
--- a/layouts/partials/header.html
+++ b/layouts/partials/header.html
@@ -24,6 +24,11 @@
         {{ end }}
     </head>
 
+    <!-- adds MathJax support -->
+    <script type="text/javascript" async
+      src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+  </script>
+
     <body>
         {{ partial "body-open" . }}
         <nav class="navbar navbar-default navbar-fixed-top">
