diff --git a/interface.go b/interface.go
index f27317e..6d98c9d 100644
--- a/interface.go
+++ b/interface.go
@@ -29,6 +29,7 @@ type PeerI interface {
 	AnnounceBlock(blockHash *chainhash.Hash)
 	RequestBlock(blockHash *chainhash.Hash)
 	Network() wire.BitcoinNet
+	IsHealthy() bool
 }
 
 type PeerHandlerI interface {