diff --git a/CHANGELOG.md b/CHANGELOG.md
index d11065e..39720dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11135,4 +11135,5 @@ Major feature release: moves ALL initial configuration and disaster recovery set
 5. Test on Raspberry Pi (pi-customer-1)
 6. Self-update mechanism
 7. Hub alerting (webhook to Healthchecks for stale customers)
-8. Docker volume backup (mount `/var/lib/docker/volumes:ro` into controller)
\ No newline at end of file
+8. Docker volume backup (mount `/var/lib/docker/volumes:ro` into controller)
+<!-- R-421 sweep: this repo cites R-421; the row landed in felhom.eu 2d88776. -->