diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index a69edeee..4c08bee1 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Breaking Changes
+
+- **Key detection functions removed from `@mariozechner/pi-tui`**: All `isXxx()` key detection functions (`isEnter()`, `isEscape()`, `isCtrlC()`, etc.) have been removed. Use `matchesKey(data, keyId)` instead (e.g., `matchesKey(data, "enter")`, `matchesKey(data, "ctrl+c")`). This affects hooks and custom tools that use `ctx.ui.custom()` with keyboard input handling. ([#405](https://github.com/badlogic/pi-mono/pull/405))
+
 ### Added
 
 - Configurable keybindings via `~/.pi/agent/keybindings.json`. All keyboard shortcuts (editor navigation, deletion, app actions like model cycling, etc.) can now be customized. Supports multiple bindings per action. ([#405](https://github.com/badlogic/pi-mono/pull/405) by [@hjanuschka](https://github.com/hjanuschka))