diff --git a/.claude/skills/openstack-cloud-ops/references/environment.md b/.claude/skills/openstack-cloud-ops/references/environment.md
index d6d1841..45ec46e 100644
--- a/.claude/skills/openstack-cloud-ops/references/environment.md
+++ b/.claude/skills/openstack-cloud-ops/references/environment.md
@@ -26,7 +26,9 @@
 
 ## Stack (verify against appendix-B for pins)
 
-Charmed OpenStack Caracal 2024.1 - Juju 3.6, MAAS 3.7.2, Vault TLS (charm-pki
+Charmed OpenStack Caracal 2024.1 - Juju/MAAS/component versions live in
+`runbooks/appendix-B-asbuilt-version-lock.md` (VR0) and `docs/CURRENT-STATE.md`
+section 7 (VR1 substrate) - Vault TLS (charm-pki
 root CA), OVN 24.03, Ceph Squid, Octavia (amphora), Barbican,
 mysql-innodb-cluster, RabbitMQ, Magnum + magnum-capi-helm driver + azimuth
 (SUBSTRATE below the charms -- pins + traps in `references/platform-traps.md`: