diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index a5a9074..d815e8a 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -13,7 +13,7 @@ env:
   BASE_IMAGE_USER: ghcr.io/driplineorg
   BASE_IMAGE_REPO: dripline-cpp
   DEV_SUFFIX: '-dev'
-  BASE_IMAGE_TAG: 'v2.10.8'
+  BASE_IMAGE_TAG: 'v2.10.9'
 #  BASE_IMAGE_TAG: 'dlcpp-hf2.10.8'
 #  DEV_SUFFIX: ''
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index cf81585..8012bd7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.5)  # <3.5 is deprecated by CMake
-project( DriplinePy VERSION 5.1.1 )
+project( DriplinePy VERSION 5.1.2 )
 
 cmake_policy( SET CMP0074 NEW )
 
diff --git a/Dockerfile b/Dockerfile
index aed6d19..43b18bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 ARG img_user=ghcr.io/driplineorg
 ARG img_repo=dripline-cpp
 #ARG img_tag=dlcpp-hf2.10.8
-ARG img_tag=v2.10.8
+ARG img_tag=v2.10.9
 
 FROM ${img_user}/${img_repo}:${img_tag} AS deps
 
diff --git a/changelog.md b/changelog.md
index b30f350..5112f4a 100644
--- a/changelog.md
+++ b/changelog.md
@@ -8,6 +8,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 
+## [5.1.2] - 2025-12-03
+
+## Changed
+
+- Updated dl-cpp version to v2.10.9
+
+
 ## [5.1.1] - 2025-11-05
 
 ## Changed
diff --git a/chart/Chart.yaml b/chart/Chart.yaml
index 94c9097..cbb96c0 100644
--- a/chart/Chart.yaml
+++ b/chart/Chart.yaml
@@ -1,7 +1,7 @@
 apiVersion: v1
 ## the appVersion is used as the container image tag for the main container in the pod from the deployment
 ## it can be overridden by a values.yaml file in image.tag
-appVersion: "v5.1.1"
+appVersion: "v5.1.2"
 description: Deploy a dripline-python microservice
 name: dripline-python
 version: 1.1.2