diff --git a/_includes/js-selector.html b/_includes/js-selector.html
index f0b0dbd..6e07a51 100644
--- a/_includes/js-selector.html
+++ b/_includes/js-selector.html
@@ -24,25 +24,12 @@
 {% if page.math %}
   <!-- MathJax -->
   <script type="text/x-mathjax-config">
-  // see: <https://docs.mathjax.org/en/latest/options/input/tex.html#tex-options>
-  MathJax = {
-    tex: {
-      inlineMath: [              // start/end delimiter pairs for in-line math
-        ['$','$'],
-        ['\\(','\\)']
-      ],
-      displayMath: [             // start/end delimiter pairs for display math
-        ['$$', '$$'],
-        ['\\[', '\\]']
-      ],
-      processEscapes: true
-    }
-  };
+    MathJax.Hub.Config({
+      tex2jax: { inlineMath: [['$', '$']] }
+    });
   </script>
   <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
-  <script type="text/javascript" id="MathJax-script" async
-    src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js">
-  </script>
+  <script id="MathJax-script" async src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
 {% endif %}
 {% if page.code %}
   <script src="{{ '/assets/js/code-tabs.js' | relative_url }}"></script>