diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00e30bd9c6d..04954ec12ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,23 @@ The format is loosely based on [Keep a Changelog](http://keepachangelog.com/en/1
 
 Every Agent version includes the most recent firmware version. See the [firmware changelog](https://github.com/UltimateHackingKeyboard/firmware/blob/master/CHANGELOG.md).
 
+## [4.2.0] - 2024-06-27
+
+Firmware: 11.1.1 [[release](https://github.com/UltimateHackingKeyboard/firmware/releases/tag/v11.1.1)] | Device Protocol: 4.10.0 | User Config: 7.1.0 | Hardware Config: 1.0.0
+
+- Add macro command syntax highlighting and autocompletion.
+- When clicking on a macro error, jump to the relevant smart macro cursor position.
+- Add "duplicate macro item" button.
+- Add a logarithmic slider for LED fade timeout setting.
+- Support 20 mouse buttons.
+- Group configuration history records per device.
+- Make the "back to keymap" link revert to the previously visible layer.
+- Fix "add macro action" animation glitches.
+- Always make Agent display firmware documentation, even if git information is missing.
+- Make tooltips always appear on-screen, even when they're at the bottom of the screen.
+- Fix the "Double tap to lock layer timeout" tooltip on the typing behaviour page.
+- Fix occasionally incomplete firmware "update succeeded" message.
+
 ## [4.1.0] - 2024-05-03
 
 Firmware: 11.1.0 [[release](https://github.com/UltimateHackingKeyboard/firmware/releases/tag/v11.1.0)] | Device Protocol: 4.10.0 | User Config: 7.1.0 | Hardware Config: 1.0.0
diff --git a/package.json b/package.json
index 1a2e346cb62..a833e902362 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "private": true,
   "author": "Ultimate Gadget Laboratories",
   "main": "electron/dist/electron-main.js",
-  "version": "4.1.0",
+  "version": "4.2.0",
   "firmwareVersion": "11.1.1",
   "deviceProtocolVersion": "4.10.0",
   "userConfigVersion": "7.1.0",