diff --git a/CHANGELOG.md b/CHANGELOG.md
index 73cd951f6..0b0d493af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Added
+- Weapon aim lock audio (`sfx_weapon_aim_lock.ogg`) — clinical targeting confirmation tone for weapon aim state (#440)
+- Stance change audio (`sfx_stance_change.ogg`) — subtle mechanical click for stance toggle feedback (#440)
 - `make pre-pr` target — full pre-PR verification chain: lint → build → test → content validation → fixture staleness (#460, #465)
 - Branch-specific pre-PR variants: `make pre-pr-server`, `make pre-pr-client`, `make pre-pr-content`
 - Content cross-reference validation (9 checks) — canonical_id uniqueness, relationship targets, location slugs, dialogue locations, fact_ids, triangle membership, npc_count, dialogue line_ids, bidirectional relationships (#464)