diff --git a/.gitignore b/.gitignore
index c0ced02..4d81cf5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,6 @@
 
 # Composer files
 /vendor
+
+# kirbyup temp development entry
+/index.dev.mjs
diff --git a/README.md b/README.md
index c78e2bc..2bb5c83 100755
--- a/README.md
+++ b/README.md
@@ -34,6 +34,16 @@ npm run dev
 This will automatically update the `index.js` and `index.css` of your plugin as soon as you make changes.
 Reload the Panel to see your code changes reflected.
 
+With kirbyup 2.0.0+ and Kirby 3.7.4+ you can alternatively use hot module reloading (HMR):
+
+```
+npm run serve
+```
+
+This will start a development server that updates the page as soon as you make changes. Some updates are instant, like CSS or Vue template changes, others require a reload of the page, which happens automatically.
+
+> 💡 The live reload functionality requires top level await, [which is only supported in modern browsers](https://caniuse.com/mdn-javascript_operators_await_top_level). If you're developing in older browsers, use `npm run dev` and reload the page manually to see changes.
+
 ### Production
 
 As soon as you are happy with your plugin, you should build the final version with: