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diff --git a/README.md b/README.md
index 7c7f342..8eb5350 100644
--- a/README.md
+++ b/README.md
@@ -720,6 +720,8 @@ Reveal.initialize({
 });
 ```
 
+Read MathJax's documentation if you want [secure delivery](http://docs.mathjax.org/en/latest/start.html#secure-access-to-the-cdn) or serve [specific versons](http://docs.mathjax.org/en/latest/configuration.html#loading-mathjax-from-the-cdn) for stabilty.
+
 
 ## Installation