diff --git a/README.md b/README.md
index 0c3588c..d0fe992 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ or for use without any build tools:
 
 ```html
 <script type="module">
-  import { nwc, webln } from "https://esm.sh/@getalby/sdk@3.7.0"; // jsdelivr.net, skypack.dev also work
+  import { nwc, webln } from "https://esm.sh/@getalby/sdk@4.0.0"; // jsdelivr.net, skypack.dev also work
 
   // ... then use nwc.NWCClient or webln.NWC (see documentation below)
 </script>