diff --git a/CHANGELOG/CHANGELOG-3.4.md b/CHANGELOG/CHANGELOG-3.4.md
index 77caa2bfb73..3db2e90e6f0 100644
--- a/CHANGELOG/CHANGELOG-3.4.md
+++ b/CHANGELOG/CHANGELOG-3.4.md
@@ -12,6 +12,9 @@ Previous change logs can be found at [CHANGELOG-3.3](https://github.com/etcd-io/
 - 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)
 
+### Package `clientv3`
+- Fix [etcd might send duplicated events to watch clients](https://github.com/etcd-io/etcd/pull/15275).
+
 ### 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).
 - Bump bbolt to [v1.3.7](https://github.com/etcd-io/etcd/pull/15223).
diff --git a/CHANGELOG/CHANGELOG-3.5.md b/CHANGELOG/CHANGELOG-3.5.md
index 5919842ff74..a0a1a6344f5 100644
--- a/CHANGELOG/CHANGELOG-3.5.md
+++ b/CHANGELOG/CHANGELOG-3.5.md
@@ -9,6 +9,9 @@ Previous change logs can be found at [CHANGELOG-3.4](https://github.com/etcd-io/
 ### Package `netutil`
 - Fix [consistently format IPv6 addresses for comparison](https://github.com/etcd-io/etcd/pull/15187)
 
+### Package `clientv3`
+- Fix [etcd might send duplicated events to watch clients](https://github.com/etcd-io/etcd/pull/15274).
+
 ### Dependency
 - Bump bbolt to [v1.3.7](https://github.com/etcd-io/etcd/pull/15222).