diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a070377714..bb2309e937d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 <!-- BEGIN MUNGE: GENERATED_TOC -->
 
+- [v1.2.3](#v123)
+  - [Downloads](#downloads)
+  - [Changes since v1.2.2](#changes-since-v122)
+    - [Action Required](#action-required)
+    - [Other notable changes](#other-notable-changes)
 - [v1.3.0-alpha.2](#v130-alpha2)
   - [Downloads](#downloads)
   - [Changes since v1.3.0-alpha.1](#changes-since-v130-alpha1)
@@ -36,6 +41,45 @@
 
 <!-- NEW RELEASE NOTES ENTRY -->
 
+
+# v1.2.3
+
+[Documentation](http://kubernetes.github.io) & [Examples](http://releases.k8s.io/release-1.2/examples)
+
+## Downloads
+
+binary | sha1 hash | md5 hash
+------ | --------- | --------
+[kubernetes.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.2.3/kubernetes.tar.gz) | `b2ce4e0c72562d09ba06e3c0913f0bd78da0285e` | `69e75650de30d5a52d144799e94a168d`
+
+## Changes since v1.2.2
+
+### Action Required
+
+* Make watch cache treat resourceVersion consistent with uncached watch ([#24008](https://github.com/kubernetes/kubernetes/pull/24008), [@liggitt](https://github.com/liggitt))
+
+### Other notable changes
+
+* Fix unintended change of Service.spec.ports[].nodePort during kubectl apply ([#24180](https://github.com/kubernetes/kubernetes/pull/24180), [@AdoHe](https://github.com/AdoHe))
+* Flush conntrack state for removed/changed UDP Services ([#22573](https://github.com/kubernetes/kubernetes/pull/22573), [@freehan](https://github.com/freehan))
+* Allow setting the Host header in a httpGet probe ([#24292](https://github.com/kubernetes/kubernetes/pull/24292), [@errm](https://github.com/errm))
+* Bridge off-cluster traffic into services by masquerading. ([#24429](https://github.com/kubernetes/kubernetes/pull/24429), [@cjcullen](https://github.com/cjcullen))
+* Version-guard Kubectl client Guestbook application test against deployments ([#24478](https://github.com/kubernetes/kubernetes/pull/24478), [@ihmccreery](https://github.com/ihmccreery))
+* Fix goroutine leak in ssh-tunnel healthcheck. ([#24487](https://github.com/kubernetes/kubernetes/pull/24487), [@cjcullen](https://github.com/cjcullen))
+* Fixed mounting with containerized kubelet ([#23435](https://github.com/kubernetes/kubernetes/pull/23435), [@jsafrane](https://github.com/jsafrane))
+* Do not throw creation errors for containers that fail immediately after being started ([#23894](https://github.com/kubernetes/kubernetes/pull/23894), [@vishh](https://github.com/vishh))
+* Honor starting resourceVersion in watch cache ([#24208](https://github.com/kubernetes/kubernetes/pull/24208), [@ncdc](https://github.com/ncdc))
+* Fix TerminationMessagePath ([#23658](https://github.com/kubernetes/kubernetes/pull/23658), [@Random-Liu](https://github.com/Random-Liu))
+* Fix gce.getDiskByNameUnknownZone logic. ([#24452](https://github.com/kubernetes/kubernetes/pull/24452), [@a-robinson](https://github.com/a-robinson))
+* kubelet: add RSS memory to the summary API ([#24015](https://github.com/kubernetes/kubernetes/pull/24015), [@yujuhong](https://github.com/yujuhong))
+* e2e: adapt kubelet_perf.go to use the new summary metrics API ([#24003](https://github.com/kubernetes/kubernetes/pull/24003), [@yujuhong](https://github.com/yujuhong))
+* e2e: fix error checking in kubelet stats ([#24205](https://github.com/kubernetes/kubernetes/pull/24205), [@yujuhong](https://github.com/yujuhong))
+* Trusty: Avoid unnecessary in-memory temp files ([#24144](https://github.com/kubernetes/kubernetes/pull/24144), [@andyzheng0831](https://github.com/andyzheng0831))
+* Allowing type object in kubectl swagger validation ([#24054](https://github.com/kubernetes/kubernetes/pull/24054), [@nikhiljindal](https://github.com/nikhiljindal))
+* Add ClusterUpgrade tests ([#24150](https://github.com/kubernetes/kubernetes/pull/24150), [@ihmccreery](https://github.com/ihmccreery))
+* Trusty: Do not create the docker-daemon cgroup ([#23996](https://github.com/kubernetes/kubernetes/pull/23996), [@andyzheng0831](https://github.com/andyzheng0831))
+
+
 # v1.3.0-alpha.2
 
 [Documentation](http://kubernetes.github.io) & [Examples](http://releases.k8s.io/master/examples)