diff --git a/views/index.ejs b/views/index.ejs
index f1f0227b4..086b3db2e 100644
--- a/views/index.ejs
+++ b/views/index.ejs
@@ -10,11 +10,11 @@
     <link rel="icon" type="image/png" href="<%= urlPrefix %>/public/favicon.ico" />
     <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,400i,700&display=fallback">
 
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.9.0/katex.min.css" />
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.11.1/katex.min.css" />
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.16.2/build/styles/default.min.css">    
     <link
       rel="stylesheet"
-      href="https://cdn.jsdelivr.net/github-markdown-css/2.2.1/github-markdown.css"
+      href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/4.0.0/github-markdown.min.css"
     />
     <link rel="stylesheet" href="<%= style %>" />
     <style type="text/css">