diff --git a/CHANGELOG.md b/CHANGELOG.md
index ec50f7588..1e2f79317 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased]
 * fix: styled underlines in editors (https://github.com/zellij-org/zellij/pull/2918)
 * fix(plugins): add `LaunchPlugin` and some cwd fixes (https://github.com/zellij-org/zellij/pull/2916)
+* fix(performance): significantly reduce CPU utilization when serializing sessions (https://github.com/zellij-org/zellij/pull/2920)
 
 ## [0.39.0] - 2023-07-11
 * feat(panes): start panes/editors/commands/plugins in-place (https://github.com/zellij-org/zellij/pull/2795)