diff --git a/src/index.ts b/src/index.ts
index e666c0cd..884d2818 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2022,6 +2022,7 @@ export class GossipSub extends EventEmitter<GossipsubEvents> implements PubSub<G
       // This message has already been seen. We don't re-publish messages that have already
       // been published on the network.
       if (ignoreDuplicateMessages) {
+        this.metrics?.onIgnoreDuplicateMsg(topic)
         return { recipients: [] }
       }
       throw Error('PublishError.Duplicate')
diff --git a/src/metrics.ts b/src/metrics.ts
index caa29ba6..91daf97f 100644
--- a/src/metrics.ts
+++ b/src/metrics.ts
@@ -355,6 +355,12 @@ export function getMetrics(
       labelNames: ['topic']
     }),
 
+    duplicateMsgIgnored: register.gauge<{ topic: TopicLabel }>({
+      name: 'gossisub_duplicate_msg_ignored_total',
+      help: 'Total count of duplicate message ignored by topic',
+      labelNames: ['topic']
+    }),
+
     /* Metrics related to scoring */
     /** Total times score() is called */
     scoreFnCalls: register.gauge({
@@ -629,6 +635,11 @@ export function getMetrics(
       }
     },
 
+    onIgnoreDuplicateMsg(topicStr: TopicStr): void {
+      const topic = this.toTopic(topicStr)
+      this.duplicateMsgIgnored.inc({ topic }, 1)
+    },
+
     onRpcRecv(rpc: IRPC, rpcBytes: number): void {
       this.rpcRecvBytes.inc(rpcBytes)
       this.rpcRecvCount.inc(1)