diff --git a/docs/index.html b/docs/index.html
index ab425fca4..58a4eb830 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -7,7 +7,7 @@
   <meta name="description" content="Markdownish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.">
   <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
   <!-- <link rel="stylesheet" href="//unpkg.com/docsify/lib/themes/vue.css"> -->
-  <link rel="stylesheet" href="theme.css">  <script src="//cdn.jsdelivr.net/npm/mermaid@8.11.4/dist/mermaid.min.js"></script>
+  <link rel="stylesheet" href="theme.css">  <script src="//cdn.jsdelivr.net/npm/mermaid@8.12.0/dist/mermaid.min.js"></script>
   <!-- <script src="http://localhost:9000/mermaid.js"></script> -->
   <script>
     (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){