diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ee4b2868e..e0995b1b82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ release.
 
 ## Unreleased
 
+* update loadgenerator dependencies and the base image
+  ([#1274](https://github.com/open-telemetry/opentelemetry-demo/pull/1274))
 * add env var for pinning trace-based test tool version
   ([#1239](https://github.com/open-telemetry/opentelemetry-demo/pull/1239))
 * update PHP quoteservice to use 1.0.0
diff --git a/src/loadgenerator/Dockerfile b/src/loadgenerator/Dockerfile
index bf9026d428..473bf73772 100644
--- a/src/loadgenerator/Dockerfile
+++ b/src/loadgenerator/Dockerfile
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-FROM python:3.11-slim-buster as base
+FROM python:3.12-slim-bullseye as base
 
 FROM base as builder
 RUN apt-get -qq update \
diff --git a/src/loadgenerator/requirements.txt b/src/loadgenerator/requirements.txt
index 0b31606874..f368f41994 100644
--- a/src/loadgenerator/requirements.txt
+++ b/src/loadgenerator/requirements.txt
@@ -15,20 +15,20 @@ greenlet==3.0.1
 idna==3.4
 itsdangerous==2.1.2
 jinja2==3.1.2
-locust==2.18.1
+locust==2.18.2
 markupsafe==2.1.3
 msgpack==1.0.7
-opentelemetry-api==1.20.0
-opentelemetry-exporter-otlp-proto-grpc==1.20.0
-opentelemetry-instrumentation==0.41b0
-opentelemetry-instrumentation-jinja2==0.41b0
-opentelemetry-instrumentation-requests==0.41b0
-opentelemetry-instrumentation-system-metrics==0.41b0
-opentelemetry-instrumentation-urllib3==0.41b0
-opentelemetry-proto==1.20.0
-opentelemetry-sdk==1.20.0
-opentelemetry-semantic-conventions==0.41b0
-opentelemetry-util-http==0.41b0
+opentelemetry-api==1.21.0
+opentelemetry-exporter-otlp-proto-grpc==1.21.0
+opentelemetry-instrumentation==0.42b0
+opentelemetry-instrumentation-jinja2==0.42b0
+opentelemetry-instrumentation-requests==0.42b0
+opentelemetry-instrumentation-system-metrics==0.42b0
+opentelemetry-instrumentation-urllib3==0.42b0
+opentelemetry-proto==1.21.0
+opentelemetry-sdk==1.21.0
+opentelemetry-semantic-conventions==0.42b0
+opentelemetry-util-http==0.42b0
 protobuf==4.25.0
 psutil==5.9.6
 pyzmq==25.1.1
@@ -37,7 +37,7 @@ roundrobin==0.0.4
 six==1.16.0
 typing-extensions==4.8.0
 urllib3==2.0.7
-werkzeug==2.3.7
-wrapt==1.15.0
+werkzeug==2.3.8
+wrapt==1.16.0
 zope-event==5.0
 zope-interface==6.1