diff --git a/src/peer.ts b/src/peer.ts
index d155c6d..687a30b 100644
--- a/src/peer.ts
+++ b/src/peer.ts
@@ -2,6 +2,7 @@ import Proxy from "./proxy.js";
 import Socket from "./socket.js";
 import { Buffer } from "buffer";
 export type OnOpen = (
+  peer: Peer,
   socket: Socket,
   data: any
 ) =>