diff --git a/CHANGELOG/CHANGELOG-3.4.md b/CHANGELOG/CHANGELOG-3.4.md
index 22de6aaae..b09621f13 100644
--- a/CHANGELOG/CHANGELOG-3.4.md
+++ b/CHANGELOG/CHANGELOG-3.4.md
@@ -10,6 +10,7 @@ Previous change logs can be found at [CHANGELOG-3.3](https://github.com/etcd-io/
 - Fix [etcdserver might promote a non-started learner](https://github.com/etcd-io/etcd/pull/15097).
 - Improve [mvcc: reduce count-only range overhead](https://github.com/etcd-io/etcd/pull/15099)
 - Improve [mvcc: push down RangeOptions.limit argv into index tree to reduce memory overhead](https://github.com/etcd-io/etcd/pull/15137)
+- Improve [server: set multiple concurrentReadTx instances share one txReadBuffer](https://github.com/etcd-io/etcd/pull/15195)
 
 ### Dependency
 - Upgrade [github.com/grpc-ecosystem/grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway/releases) from [v1.9.5](https://github.com/grpc-ecosystem/grpc-gateway/releases/tag/v1.9.5) to [v1.11.0](https://github.com/grpc-ecosystem/grpc-gateway/releases/tag/v1.11.0).