diff --git a/07-routing-gossip.md b/07-routing-gossip.md
index c59dcf237..4fc6e3cba 100644
--- a/07-routing-gossip.md
+++ b/07-routing-gossip.md
@@ -285,6 +285,7 @@ The following `address descriptor` types are defined:
          onion service addresses; Encodes:
          `[32:32_byte_ed25519_pubkey] || [2:checksum] || [1:version]`, where
          `checksum = sha3(".onion checksum" | pubkey || version)[:2]`.
+   * `5`: DNS hostname; data = `[1:hostname_len][hostname_len:hostname][2:port]` (length up to 258)
 
 ### Requirements