diff --git a/en/ln-02.md b/en/ln-02.md
index c63d3a4..e56d361 100644
--- a/en/ln-02.md
+++ b/en/ln-02.md
@@ -48,3 +48,4 @@ That's it! We have now learned how Alice and Bob can securely transact by settin
 
 - [BOLT3](https://github.com/lightning/bolts/blob/master/03-transactions.md)
 - [LN Things Part 2: Updating state](https://ellemouton.com/posts/updating-state/) by nostr:nprofile1qqswrt9pnxatlplu49h6meld8svmwqt87wwvk256rqk07n6eu4qeh5gpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dszpfjtz
+- [eltoo](https://bitcoinops.org/en/topics/eltoo/)