diff --git a/CHANGELOG.md b/CHANGELOG.md
index c857bca..0c1df8e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,16 @@ one of them changed. An entry says which artefact and which version, so `web 0.1
 Every version published to a channel appears here. Nothing is written from memory afterwards: a build
 cannot be published without its entry.
 
+## 2026-10-26 — MAC addresses in the inventory `agent 0.53.1` `api 2.3.1` `web 2.3.2`
+
+**The agent reports its network interfaces with their MAC addresses.** A machine's inventory now
+lists each interface that carries an address — its name, its MAC address and its IP addresses — and
+the Assets search finds a machine by its MAC, written with colons or dashes. Machines on an earlier
+agent keep showing their addresses alone until they take 0.53.1.
+
+Update the web and api images, then the agent release image; enrolled machines take the new build
+under their update policy. The database does not change.
+
 ## 2026-10-26 — Features and Policies in the platform settings `web 2.3.1`
 
 **The platform settings say less and are easier to scan.** The Machines tab is replaced by two: