diff --git a/src/pytest_celery/vendors/worker/Dockerfile b/src/pytest_celery/vendors/worker/Dockerfile
index 7a6bab5d..c2c3bac1 100644
--- a/src/pytest_celery/vendors/worker/Dockerfile
+++ b/src/pytest_celery/vendors/worker/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-slim-buster
+FROM python:3.10-slim-bookworm
 
 # Create a user to run the worker
 RUN adduser --disabled-password --gecos "" test_user