diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99905448b..2374cf06a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@
 
 ### Fixed
 * If a run is markedAsFailure in your Browsertime script, sitespeed.io exits with an error code [#4047](https://github.com/sitespeedio/sitespeed.io/pull/4047).
+
+### Added
+* Update to [Browsertime 21.0.0](https://github.com/sitespeedio/browsertime/blob/main/CHANGELOG.md#2100---2024-01-07).
 * If you use `process.exitCode` i your scripting, it will be respected by sitespeed.io and exit with that exit code [#4044](https://github.com/sitespeedio/sitespeed.io/pull/4044).
 
 ## 31.0.1 - 2023-12-28