diff --git a/main_test.go b/main_test.go
index 0f208a6..41d4efd 100644
--- a/main_test.go
+++ b/main_test.go
@@ -35,6 +35,7 @@ var (
 				"plumtree": {
 					"total_sent_gossip": 1,
 					"total_received_gossip": 2,
+					"total_received_gossip_hop": 4,
 					"total_sent_ihave": 3,
 					"total_received_ihave": 4,
 					"total_sent_graft": 5,
@@ -55,6 +56,7 @@ var (
 				"plumtree": {
 					"total_sent_gossip": 101,
 					"total_received_gossip": 102,
+					"total_received_gossip_hop": 150,
 					"total_sent_ihave": 103,
 					"total_received_ihave": 104,
 					"total_sent_graft": 105,
diff --git a/test/maximum.metrics b/test/maximum.metrics
index c2393d2..e570848 100644
--- a/test/maximum.metrics
+++ b/test/maximum.metrics
@@ -50,6 +50,10 @@ sora_cluster_relay_plumtree_ignored_total{node_name="node-02"} 111
 # TYPE sora_cluster_relay_plumtree_received_gossip_total counter
 sora_cluster_relay_plumtree_received_gossip_total{node_name="node-01"} 2
 sora_cluster_relay_plumtree_received_gossip_total{node_name="node-02"} 102
+# HELP sora_cluster_relay_plumtree_received_gossip_hop_total The total number of hop count of Plumtree GOSSIP messages received by the cluster relay.
+# TYPE sora_cluster_relay_plumtree_received_gossip_hop_total counter
+sora_cluster_relay_plumtree_received_gossip_hop_total{node_name="node-01"} 4
+sora_cluster_relay_plumtree_received_gossip_hop_total{node_name="node-02"} 150
 # HELP sora_cluster_relay_plumtree_received_graft_total The total number of Plumtree GRAFT messages received by the cluster relay.
 # TYPE sora_cluster_relay_plumtree_received_graft_total counter
 sora_cluster_relay_plumtree_received_graft_total{node_name="node-01"} 6
diff --git a/test/sora_cluster_metrics_enabled.metrics b/test/sora_cluster_metrics_enabled.metrics
index e3f6867..6e13a48 100644
--- a/test/sora_cluster_metrics_enabled.metrics
+++ b/test/sora_cluster_metrics_enabled.metrics
@@ -50,6 +50,10 @@ sora_cluster_relay_plumtree_ignored_total{node_name="node-02"} 111
 # TYPE sora_cluster_relay_plumtree_received_gossip_total counter
 sora_cluster_relay_plumtree_received_gossip_total{node_name="node-01"} 2
 sora_cluster_relay_plumtree_received_gossip_total{node_name="node-02"} 102
+# HELP sora_cluster_relay_plumtree_received_gossip_hop_total The total number of hop count of Plumtree GOSSIP messages received by the cluster relay.
+# TYPE sora_cluster_relay_plumtree_received_gossip_hop_total counter
+sora_cluster_relay_plumtree_received_gossip_hop_total{node_name="node-01"} 4
+sora_cluster_relay_plumtree_received_gossip_hop_total{node_name="node-02"} 150
 # HELP sora_cluster_relay_plumtree_received_graft_total The total number of Plumtree GRAFT messages received by the cluster relay.
 # TYPE sora_cluster_relay_plumtree_received_graft_total counter
 sora_cluster_relay_plumtree_received_graft_total{node_name="node-01"} 6