diff --git a/CHANGELOG/CHANGELOG-2.3.md b/CHANGELOG/CHANGELOG-2.3.md
index 9c1a644..eb2feda 100644
--- a/CHANGELOG/CHANGELOG-2.3.md
+++ b/CHANGELOG/CHANGELOG-2.3.md
@@ -6,6 +6,17 @@ When cutting a new release, update the `unreleased` heading to the tag being gen
 
 ## Unreleased
 
+## v2.3.1 - 2024-11-08
+
+### New Features
+
+* [#130](https://github.com/datastax/zdm-proxy/issues/130): Security vulnerabilities in ZDM version 2.3.0
+* [#133](https://github.com/datastax/zdm-proxy/pull/133): Upgrade _google.golang.org/protobuf_ from 1.26.0-rc.1 to 1.33.0
+
+### Improvements
+
+### Bug Fixes
+
 ## v2.3.0 - 2024-07-04
 
 ### New Features
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 7fa1bb8..4d0f91f 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -6,6 +6,15 @@ Build artifacts are available at [Docker Hub](https://hub.docker.com/repository/
 
 For additional details on the changes included in a specific release, see the associated CHANGELOG-x.x.md file.
 
+## v2.3.1 - 2024-11-08
+
+Upgrade software dependencies to resolve vulnerabilities:
+- GoLang to 1.22
+- _github.com/prometheus/client_golang_ to 1.11.1
+- _google.golang.org/protobuf_ to 1.33.0
+
+[Changelog](CHANGELOG/CHANGELOG-2.3.md#v231---2024-11-08)
+
 ## v2.3.0 - 2024-07-04
 
 Support providing configuration of ZDM with YAML file.
diff --git a/proxy/launch.go b/proxy/launch.go
index 1bbd9df..f31b613 100644
--- a/proxy/launch.go
+++ b/proxy/launch.go
@@ -13,7 +13,7 @@ import (
 )
 
 // TODO: to be managed externally
-const ZdmVersionString = "2.3.0"
+const ZdmVersionString = "2.3.1"
 
 var displayVersion = flag.Bool("version", false, "display the ZDM proxy version and exit")
 var configFile = flag.String("config", "", "specify path to ZDM configuration file")