diff --git a/CHANGELOG.md b/CHANGELOG.md
index c10f4445..0cada51f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Changed
 
 - Main menu is now optional
+- Upgrade to Mermaid v8.13.3
 
 ### Fixed
 
diff --git a/layouts/partials/footer.html b/layouts/partials/footer.html
index d3654e09..05b91696 100644
--- a/layouts/partials/footer.html
+++ b/layouts/partials/footer.html
@@ -44,7 +44,7 @@
 
 {{/* Include mermaid.js only on pages that use the shortcode */}}
 {{- if .Page.HasShortcode "mermaid" -}}
-  <script src="https://unpkg.com/mermaid@8.11.4/dist/mermaid.min.js"></script>
+  <script src="https://unpkg.com/mermaid@8.13.3/dist/mermaid.min.js"></script>
   <script>
     mermaid.initialize({ theme: "default" });
   </script>