diff --git a/testserver/docker_mail/templates/docker-compose.yml b/testserver/docker_mail/templates/docker-compose.yml
index 38fec4932232634074ddf90f4dec937167ffd635..a0d99a9a00d2dc62588dd78f66d0c9c3104a9108 100644
--- a/testserver/docker_mail/templates/docker-compose.yml
+++ b/testserver/docker_mail/templates/docker-compose.yml
@@ -184,7 +184,7 @@ services:
       - "{{ basedir }}/mailman-web:/opt/mailman-web-data:rw,z"
 
   mailman-nginx:
-    image: nginx:1.25
+    image: nginx:1.28
     restart: always
     depends_on:
       - mailman-web
diff --git a/webserver/docker_mail/templates/docker-compose.yml b/webserver/docker_mail/templates/docker-compose.yml
index 8f128a5220e2d8f564b8d58e351f4c3ec7bba8e8..e46ed96ed7ec4ad1711e6dbd796530741115aafb 100644
--- a/webserver/docker_mail/templates/docker-compose.yml
+++ b/webserver/docker_mail/templates/docker-compose.yml
@@ -184,7 +184,7 @@ services:
       - "{{ basedir }}/mailman-web:/opt/mailman-web-data:rw,z"
 
   mailman-nginx:
-    image: nginx:1.25
+    image: nginx:1.28
     restart: always
     depends_on:
       - mailman-web