diff --git a/src/tls.rs b/src/tls.rs
index 93a6a22fd8..be9dccd3a5 100644
--- a/src/tls.rs
+++ b/src/tls.rs
@@ -19,8 +19,7 @@ use ssh_key::LineEnding;
 
 use crate::util;
 
-// TODO: change?
-const P2P_ALPN: [u8; 6] = *b"libp2p";
+const P2P_ALPN: [u8; 9] = *b"n0/iroh/1";
 
 /// A keypair.
 #[derive(Debug)]