diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60adea884f..18a6a5b364 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ release.
 
 * [cartservice] update .NET package to 1.7.0 release
   ([#1326](https://github.com/open-telemetry/opentelemetry-demo/pull/1326))
+* [loadgenerator and recommendationservice] Update python base image
+  ([#1329](https://github.com/open-telemetry/opentelemetry-demo/pull/1329))
 
 ## 1.7.1
 
diff --git a/src/loadgenerator/Dockerfile b/src/loadgenerator/Dockerfile
index 473bf73772..92f4da7d90 100644
--- a/src/loadgenerator/Dockerfile
+++ b/src/loadgenerator/Dockerfile
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-FROM python:3.12-slim-bullseye as base
+FROM python:3.12-slim-bookworm as base
 
 FROM base as builder
 RUN apt-get -qq update \
diff --git a/src/recommendationservice/Dockerfile b/src/recommendationservice/Dockerfile
index 25a5302b5c..4a3d2e72b7 100644
--- a/src/recommendationservice/Dockerfile
+++ b/src/recommendationservice/Dockerfile
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-FROM python:3.12-slim-bullseye as base
+FROM python:3.12-slim-bookworm as base
 
 #
 # Fetch requirements