diff --git a/docs/layouts/_default/baseof.html b/docs/layouts/_default/baseof.html
index 76ff469e3b..7f34fa8fc0 100644
--- a/docs/layouts/_default/baseof.html
+++ b/docs/layouts/_default/baseof.html
@@ -5,7 +5,7 @@
     <title>{{ block "title" . }}
       {{ .Site.Title }}
     {{ end }}</title>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/4.0.0/github-markdown.min.css">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/5.5.1/github-markdown.min.css">
     <style>
       ol > li { list-style-type: decimal; }
     </style>