diff --git a/README.md b/README.md
index 118003e..80c0308 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,9 @@
 A [remark](https://remark.js.org) plugin to render [mermaid](https://mermaid-js.github.io) diagrams
 using [playwright](https://playwright.dev).
 
-> **Warning**: Use cases for this package are rare. You should probably use
+> [!IMPORTANT]
+>
+> Use cases for this package are rare. You should probably use
 > [`rehype-mermaidjs`](https://github.com/remcohaszing/rehype-mermaidjs) instead.
 
 ## Table of Contents