diff --git a/docs/index.html b/docs/index.html
index 6d85a90f1..45e9ef4a8 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">
-  <script src="//cdn.jsdelivr.net/npm/mermaid@8.3.0/dist/mermaid.min.js"></script>
+  <script src="//cdn.jsdelivr.net/npm/mermaid@8.3.1/dist/mermaid.min.js"></script>
   <!-- <script src="//localhost:9000/mermaidq.js"></script> -->
   <style>
   .markdown-section {