update changelog-3.4 to cover the issue: memberID equals zero in corruption alarm
@@ -4,6 +4,13 @@ Previous change logs can be found at [CHANGELOG-3.3](https://github.com/etcd-io/
<hr>
+## v3.4.22 (TBD)
+
+### etcd server
+- Fix [memberID equals zero in corruption alarm](https://github.com/etcd-io/etcd/pull/14530)
+
+<hr>
+
## v3.4.21 (2022-09-15)
### etcd server
