diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04eb35d..196614c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
-## Unreleased (to become v0.131.0) — a dead controller comes back by itself; the backup status speaks per tier (2026-09-15, R-523 / R-517 / R-518)
+## v0.131.0 — a dead controller comes back by itself; the backup status speaks per tier (2026-09-15, R-523 / R-517 / R-518)
+
+> **RELEASED 2026-09-15** by `scripts/release-agent.sh` — tag `v0.131.0`, sha256 `1118b552f7e775fbde9544c7764ede7e6046e0a7db16ae8494d07a18e3c2ac9c`. Delivered to boxes by the controller v0.243.0 floor (declared MinAgent), not by hand.
 
 - **R-523 (P1) — the in-guest controller supervisor.** BIGNIGHT F9: `docker kill felhom-controller`
   left the household's dashboard on 502 for 33 minutes, because nothing watched the container.