diff --git a/CHANGELOG.md b/CHANGELOG.md
index f13e822384c..ce8ba23c9ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 You can find a list of previous releases on the [github releases](https://github.com/uber/cadence/releases) page.
 
+## [1.2.3] - 2023-09-15
+### Added
+Expose workflow history size and count to client (#5392)
+
+### Fixed
+[cadence-cli] fix typo in input flag for parallelism (#5397)
+
+### Changed
+Update config store client to support SQL database (#5395)
+Scaffold config store for sql plugins (#5396)
+Improve poller detection for isolation (#5399)
+
 ## [1.2.2] - 2023-08-29
 ### Added
 Added a update workflow execution count metric for RI (#5386)
diff --git a/common/metrics/version.go b/common/metrics/version.go
index f7e9308968c..192007cbefb 100644
--- a/common/metrics/version.go
+++ b/common/metrics/version.go
@@ -23,4 +23,4 @@
 package metrics
 
 // VersionString the current release version
-const VersionString = "1.2.2"
+const VersionString = "1.2.3"