diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1400aa457..29f0059b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 - `ticket team` command and `--team` filter — comma-separated team assignment for tickets (server, client, joint, content)
 
 ### Changed
+- All instruction files (CLAUDE.md, skills, agent files) now use `$REPO_ROOT` env var instead of `git rev-parse --show-toplevel` — pre-set per worktree via `.claude/settings.local.json`
 - `start-sprint` skill now requires plan mode — agent must create and get approval for a concrete sprint plan before starting implementation
 
 ### Fixed