diff --git a/_includes/custom-head.html b/_includes/custom-head.html
index f2edd2dd..532be4cb 100644
--- a/_includes/custom-head.html
+++ b/_includes/custom-head.html
@@ -6,5 +6,4 @@
 {% endcomment %}
 
 <link rel="stylesheet" href="{{ "/assets/custom.css" | relative_url }}">
-
-
+<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>