diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 8286d275b..411e43251 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Changed
+
+- Reduced default startup resident memory by constructing the default-off ComputerTool ArkType schema only on first parameter access, then reusing it across tool instances without changing validation or tool behavior ([#6742](https://github.com/can1357/oh-my-pi/pull/6742) by [@usr-bin-roygbiv](https://github.com/usr-bin-roygbiv)).
+
 ## [17.1.4] - 2026-07-26
 
 ### Added