diff --git a/contrib/raftexample/raft.go b/contrib/raftexample/raft.go
index 439a08375..49a18f3ea 100644
--- a/contrib/raftexample/raft.go
+++ b/contrib/raftexample/raft.go
@@ -456,7 +456,7 @@ func (rc *raftNode) serveChannels() {
 				rc.publishSnapshot(rd.Snapshot)
 			}
 			rc.raftStorage.Append(rd.Entries)
-			rc.transport.Send(rd.Messages)
+			rc.transport.Send(rc.processMessages(rd.Messages))
 			applyDoneC, ok := rc.publishEntries(rc.entriesToApply(rd.CommittedEntries))
 			if !ok {
 				rc.stop()
@@ -476,6 +476,18 @@ func (rc *raftNode) serveChannels() {
 	}
 }
 
+// When there is a `raftpb.EntryConfChange` after creating the snapshot,
+// then the confState included in the snapshot is out of date. so We need
+// to update the confState before sending a snapshot to a follower.
+func (rc *raftNode) processMessages(ms []raftpb.Message) []raftpb.Message {
+	for i := 0; i < len(ms); i++ {
+		if ms[i].Type == raftpb.MsgSnap {
+			ms[i].Snapshot.Metadata.ConfState = rc.confState
+		}
+	}
+	return ms
+}
+
 func (rc *raftNode) serveRaft() {
 	url, err := url.Parse(rc.peers[rc.id-1])
 	if err != nil {