diff --git a/auth-api/Dockerfile b/auth-api/Dockerfile
index d66324864..794ed6acb 100644
--- a/auth-api/Dockerfile
+++ b/auth-api/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.12.5-bullseye as development_build
+FROM python:3.12.5-bookworm as development_build
 
 ARG VCS_REF="missing"
 ARG BUILD_DATE="missing"
diff --git a/queue_services/account-mailer/Dockerfile b/queue_services/account-mailer/Dockerfile
index 0ee56a2d6..22cbbbbe8 100644
--- a/queue_services/account-mailer/Dockerfile
+++ b/queue_services/account-mailer/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.12.9-bullseye as development_build
+FROM python:3.12.9-bookworm as development_build
 USER root
 
 ARG VCS_REF="missing"
diff --git a/queue_services/auth-queue/Dockerfile b/queue_services/auth-queue/Dockerfile
index 796c46c0d..a0428c916 100644
--- a/queue_services/auth-queue/Dockerfile
+++ b/queue_services/auth-queue/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.12.5-bullseye as development_build
+FROM python:3.12.5-bookworm as development_build
 USER root
 
 ARG VCS_REF="missing"