diff --git a/zuul.d/manila-tempest-stable-jobs.yaml b/zuul.d/manila-tempest-stable-jobs.yaml
index d48f624..034b6d9 100644
--- a/zuul.d/manila-tempest-stable-jobs.yaml
+++ b/zuul.d/manila-tempest-stable-jobs.yaml
@@ -27,6 +27,9 @@
 
 - job:
     name: manila-tempest-plugin-lvm-stable
+    # NOTE(carloss): we are aware that focal is the current default, but
+    # in order to avoid breakages when devstack-minimal switches to a newer
+    # branch, we are pinning focal here.
     nodeset: openstack-single-node-focal
     description: |
       Test LVM multibackend (DHSS=False) in a 4+6 (dual-stack) devstack