diff --git a/_includes/head.html b/_includes/head.html
new file mode 100644
index 0000000..568e96c
--- /dev/null
+++ b/_includes/head.html
@@ -0,0 +1,4 @@
+<script type="module">
+  import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.esm.min.mjs';
+  mermaid.initialize({startOnLoad: true});
+</script>