diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index ba8a8fa7..5152eef7 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- Extension example: `sandbox/` for OS-level bash sandboxing using `@anthropic-ai/sandbox-runtime` with per-project config ([#673](https://github.com/badlogic/pi-mono/pull/673) by [@dannote](https://github.com/dannote))
+
 ## [0.44.0] - 2026-01-12
 
 ### Breaking Changes