diff --git a/zuul.d/docker-images/base.yaml b/zuul.d/docker-images/base.yaml
index 5251dec4a6..10705c877c 100644
--- a/zuul.d/docker-images/base.yaml
+++ b/zuul.d/docker-images/base.yaml
@@ -21,7 +21,7 @@
     dependencies: opendev-buildset-registry
     abstract: true
     vars:
-      docker_mirror_base_url: "http://{{ zuul_site_mirror_fqdn }}/deb-docker"
+      docker_mirror_base_url: "http://{{ zuul_site_mirror_fqdn }}/deb-docker/{{ ansible_distribution_release }}"
       zuul_work_dir: /home/zuul/src/opendev.org/opendev/system-config
 
 - job: