diff --git a/apps/mumble/README.md b/apps/mumble/README.md
index 6df14cc..135f12a 100644
--- a/apps/mumble/README.md
+++ b/apps/mumble/README.md
@@ -18,6 +18,11 @@ Secret's values are stored in this public repository. The TLS Secret
 `brunner-ninja-tls` is produced by the namespace-local Certificate and
 `letsencrypt-dns` ClusterIssuer.
 
+The new PVC `mumble-postgresql-1` is UID
+`c979de80-a2bf-41ae-91a6-96034ee9277d`, bound to PV
+`pvc-c979de80-a2bf-41ae-91a6-96034ee9277d`. The old default-namespace claim
+remains separately bound and untouched for rollback.
+
 ## Networking
 
 The LoadBalancer Service exposes TCP/UDP 64738 and retains the MikroTik