callbacks.go | 1 +
 peerconn.go  | 3 +++

diff --git a/callbacks.go b/callbacks.go
index 0e73d80993e0d207a52a43769358ac1bc7971084..83e248154a9d4c7878dc96c6e38f0ae0f9d8860d 100644
--- a/callbacks.go
+++ b/callbacks.go
@@ -10,4 +10,5 @@ type Callbacks struct {
 	CompletedHandshake    func(_ *PeerConn, infoHash InfoHash)
 	ReadMessage           func(*PeerConn, *pp.Message)
 	ReadExtendedHandshake func(*PeerConn, *pp.ExtendedHandshakeMessage)
+	PeerConnClosed        func(*PeerConn)
 }
diff --git a/peerconn.go b/peerconn.go
index cc8bdeb8580319332205d3f1ef0d7b369c6c56dc..e13e9fa3735578b389bb2acb75aab9a2954dface 100644
--- a/peerconn.go
+++ b/peerconn.go
@@ -355,6 +355,9 @@ 	cn.tickleWriter()
 	if cn.conn != nil {
 		cn.conn.Close()
 	}
+	if cb := cn.t.cl.config.Callbacks.PeerConnClosed; cb != nil {
+		cb(cn)
+	}
 }
 
 func (cn *peer) peerHasPiece(piece pieceIndex) bool {