diff --git a/CHANGELOG/CHANGELOG-3.4.md b/CHANGELOG/CHANGELOG-3.4.md
index 579ebae5a..2448d39f0 100644
--- a/CHANGELOG/CHANGELOG-3.4.md
+++ b/CHANGELOG/CHANGELOG-3.4.md
@@ -10,6 +10,8 @@ Previous change logs can be found at [CHANGELOG-3.3](https://github.com/etcd-io/
 - Fix [LeaseTimeToLive returns error if leader changed](https://github.com/etcd-io/etcd/pull/17705).
 - Fix [ignore raft messages if member id mismatch](https://github.com/etcd-io/etcd/pull/17814).
 - Update [the compaction log when bootstrap](https://github.com/etcd-io/etcd/pull/17831).
+- [Allow new server to join 3.5 cluster if `next-cluster-version-compatible=true`](https://github.com/etcd-io/etcd/pull/17665)
+- [Allow updating the cluster version when downgrading from 3.5](https://github.com/etcd-io/etcd/pull/17821).
 
 ### Package `clientv3`
 - Add [requests retry when receiving ErrGPRCNotSupportedForLearner and endpoints > 1](https://github.com/etcd-io/etcd/pull/17692).