diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e2bc60..508b882 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,17 @@ 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.
 
+## 2026-10-08 — The mouse pointer no longer flickers on a machine being viewed `agent 0.40.0`
+
+While a remote-desktop session was open, the mouse pointer of the person at the machine flickered,
+and stopped when the operator left. Each picture the agent took of the screen asked Windows to
+include transparent windows, and Windows hid the pointer for the length of every picture, up to
+thirty times a second. The agent no longer asks for that. Windows 10 and later already put
+transparent windows, including the Jarvis notice and the consent prompt, in the picture, so the
+operator's view is the same.
+
+Update the agent release image. No API, web or database update is required.
+
 ## 2026-10-08 — The person at the machine can end a remote-desktop session from the notice `agent 0.39.0` `api 0.125.0` `web 0.153.0`
 
 The notice at the top of the screen now ends with a **Disconnect** button. Pressing it ends the