diff --git a/CHANGELOG.md b/CHANGELOG.md
index 802beaa..a28a377 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,28 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.4.0] - 2026-05-03
+
+### Added
+
+- **Update Notifier**: Automatic version checking with responsive UI and clipboard integration for seamless updates.
+- **Embedded Key Shortcuts**: Bold key letters within help bar words for better accessibility on large screens.
+- **Backlog.md Integration**: Full project management system with task tracking and AI agent workflows.
+- **AI Agent Instructions**: Comprehensive documentation for Claude, Gemini, and GitHub Copilot agents.
+- **Test Suite Improvements**: DAMP (Descriptive And Meaningful Patterns) principles with factory utilities and centralized mocks.
+
+### Changed
+
+- Enhanced visual regression test coverage with new update notifier UI states.
+- Improved test organization with factory functions and mock utilities for better AI agent compatibility.
+- Migrated from `_plans/` directory to `.backlog/` for structured task management.
+- Strengthened pre-commit hooks with more comprehensive validation.
+
+### Fixed
+
+- Stabilized visual regression tests for deterministic update notifier behavior.
+- Improved audio handling in test environments to prevent flaky tests.
+
 ## [1.3.0] - 2026-05-01
 
 ### Added
diff --git a/package-lock.json b/package-lock.json
index 3177f4b..36e538b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "doro-cli",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "doro-cli",
-      "version": "1.3.0",
+      "version": "1.4.0",
       "license": "MIT",
       "dependencies": {
         "blessed": "npm:@rook2pawn/neo-blessed@^2.0.2",
diff --git a/package.json b/package.json
index 59b6335..34eafbc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "doro-cli",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "Minimal terminal pomodoro timer with keyboard shortcuts and chiptune cues",
   "files": [
     "dist",