diff --git a/CHANGELOG-3.5.md b/CHANGELOG-3.5.md
index 62161285f401..7260031a10fd 100644
--- a/CHANGELOG-3.5.md
+++ b/CHANGELOG-3.5.md
@@ -142,7 +142,8 @@ Note that any `etcd_debugging_*` metrics are experimental and subject to change.
 - Fix [server panic in slow writes warnings](https://github.com/etcd-io/etcd/issues/12197).
   - Fixed via [PR#12238](https://github.com/etcd-io/etcd/pull/12238).
 - [Fix server panic](https://github.com/etcd-io/etcd/pull/12288) when force-new-cluster flag is enabled in a cluster which had learner node.
-
+- Add [`--self-signed-cert-validity`](https://github.com/etcd-io/etcd/pull/12429) flag to support setting certificate expiration time.
+  - notice, certificates generated by etcd are valid for 1 year by default when you specify the auto-tls or peer-auto-tls option.
 
 ### Package `runtime`