diff --git a/2024.08/apache/Dockerfile b/2024.08/apache/Dockerfile
index cba94ee..a9d13d5 100644
--- a/2024.08/apache/Dockerfile
+++ b/2024.08/apache/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-debian.template
-FROM php:8.2-apache-bookworm
+FROM php:8.2-apache-bullseye
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
diff --git a/2024.08/fpm/Dockerfile b/2024.08/fpm/Dockerfile
index 9217176..a324902 100644
--- a/2024.08/fpm/Dockerfile
+++ b/2024.08/fpm/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-debian.template
-FROM php:8.2-fpm-bookworm
+FROM php:8.2-fpm-bullseye
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
diff --git a/2024.09-dev/apache/Dockerfile b/2024.09-dev/apache/Dockerfile
index 9a2df25..ad01aba 100644
--- a/2024.09-dev/apache/Dockerfile
+++ b/2024.09-dev/apache/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-debian.template
-FROM php:8.2-apache-bookworm
+FROM php:8.2-apache-bullseye
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
diff --git a/2024.09-dev/fpm/Dockerfile b/2024.09-dev/fpm/Dockerfile
index 3574613..f75da87 100644
--- a/2024.09-dev/fpm/Dockerfile
+++ b/2024.09-dev/fpm/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-debian.template
-FROM php:8.2-fpm-bookworm
+FROM php:8.2-fpm-bullseye
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \