diff --git a/CHANGELOG.md b/CHANGELOG.md
index d22b2e48..0080ee9e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,9 +4,37 @@
 
 ## [Unreleased]
 
+## [1.1.0-beta.6] - 2021-09-21
+
 ### Added
 - Show error message if connected hub is running old firmware ([support#482]).
 
+### Changed
+- Updated dependencies.
+- Updated to Pybricks firmware v3.1.0b1:
+
+  ### Added
+  - Support for LEGO Technic Color Light Matrix ([support#440]).
+  - Support for LEGO UART devices with a new battery power flag. This is
+    required to support the new LEGO Technic Color Light Matrix ([support#440]).
+  - Support for the SPIKE Essential hub/Technic Small hub ([support#439]).
+
+  ### Fixed
+  - Fixed Ultrasonic Sensor and Color Sensor turning off when a
+    user script ends ([support#456]).
+  - Hub reset due to watchdog timer when writing data to UART I/O device
+    ([support#304]).
+  - City/Technic hubs not connecting via Bluetooth on macOS 12 ([support#489]).
+
+  ### Changed:
+  - Updated to MicroPython v1.17.
+
+  [support#304]: https://github.com/pybricks/support/issues/304
+  [support#439]: https://github.com/pybricks/support/issues/439
+  [support#440]: https://github.com/pybricks/support/issues/440
+  [support#456]: https://github.com/pybricks/support/issues/456
+  [support#489]: https://github.com/pybricks/support/issues/489
+
 [support#482]: https://github.com/pybricks/support/issues/482
 
 ## [1.1.0-beta.5] - 2021-08-30
@@ -15,18 +43,18 @@
 - Updated to Pybricks firmware v3.1.0a4:
 
   ### Added
-  - Enabled builtin `bytearray` ([pull#60]).
-  - Enabled `ustruct` module ([pull#60]).
+  - Enabled builtin `bytearray` ([pybricks-code#60]).
+  - Enabled `ustruct` module ([pybricks-code#60]).
   - Added alpha support for dual boot installation on the SPIKE Prime Hub.
   - Added `pybricks.experimental.hello_world` function to make it easier for
     new contributors to experiment with Pybricks using C code.
   - Added ability to import the `main.mpy` that is embedded in the firmware from
     a download and run program ([support#408]).
   - Added `pybricks.iodevices.LWP3Device` to communicate with a device that supports
-    the LEGO Wireless Protocol 3.0.00 ([pull#68])
+    the LEGO Wireless Protocol 3.0.00 ([pybricks-code#68])
 
   ### Changed
-  - Move Hub Bluetooth optimizations to reduce firmware size ([issue#49]).
+  - Move Hub Bluetooth optimizations to reduce firmware size ([pybricks-code#49]).
   - Disabled `pybricks.iodevices` module on Move Hub to reduce firmware size.
   - Improvements to `pybricks.pupdevices.Remote`:
     - Check if a remote is already connected before attempting to create a new
@@ -36,9 +64,9 @@
     - Add `name()` method.
     - Add `light` attribute.
 
-  [issue#49]: https://github.com/pybricks/pybricks-micropython/issues/49
-  [pull#60]: https://github.com/pybricks/pybricks-micropython/pull/60
-  [pull#68]: https://github.com/pybricks/pybricks-micropython/pull/68
+  [pybricks-code#49]: https://github.com/pybricks/pybricks-micropython/issues/49
+  [pybricks-code#60]: https://github.com/pybricks/pybricks-micropython/pull/60
+  [pybricks-code#68]: https://github.com/pybricks/pybricks-micropython/pull/68
   [support#408]: https://github.com/pybricks/support/issues/408
 
 - Updated documentation:
@@ -62,16 +90,26 @@
   end [support#433].
 - About menu now shows firmware version as main version [support#412].
 
+[support#403]: https://github.com/pybricks/support/issues/403
+[support#412]: https://github.com/pybricks/support/issues/412
+[support#433]: https://github.com/pybricks/support/issues/433
+
 ## [1.1.0-beta.3] - 2021-07-20
 
 ### Changed
-- Changed snippet (autocomplete) content and behavior [issue#471].
-- Changed gutter background color [issue#472].
+- Changed snippet (autocomplete) content and behavior [pybricks-code#471].
+- Changed gutter background color [pybricks-code#472].
 - Added *BETA* badge to application icon [support#375].
 - Updated hub firmware to [v3.1.0a3].
 
 ### Fixed
-- Fixed auto-indent not working [issue#470].
+- Fixed auto-indent not working [pybricks-code#470].
+
+[support#375]: https://github.com/pybricks/support/issues/375
+[pybricks-code#470]: https://github.com/pybricks/pybricks-code/issues/470
+[pybricks-code#471]: https://github.com/pybricks/pybricks-code/issues/471
+[pybricks-code#472]: https://github.com/pybricks/pybricks-code/issues/472
+[v3.1.0a3]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#310a3---2021-07-19
 
 ## [1.1.0-beta.2] - 2021-07-06
 
@@ -82,12 +120,17 @@
 ### Fixed
 - Fixed run button still enabled after hub disconnects during download [support#378].
 
+[support#378]: https://github.com/pybricks/support/issues/378
+[v3.1.0a2]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#310a2---2021-07-06
+
 ## [1.1.0-beta.1] - 2021-06-23
 
 ### Changed
 - Updated projects URL.
 - Updated hub firmware to [v3.1.0a1].
 - Updated docs.
+- 
+[v3.1.0a1]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#310a1---2021-06-23
 
 ## [1.0.0] - 2021-06-08
 
@@ -102,23 +145,13 @@
 
 Prerelease changes are documented at [support#48].
 
-
-<!-- let's try to keep this list sorted alphabetically -->
-[issue#470]: https://github.com/pybricks/pybricks-code/issues/470
-[issue#471]: https://github.com/pybricks/pybricks-code/issues/471
-[issue#472]: https://github.com/pybricks/pybricks-code/issues/472
 [support#48]: https://github.com/pybricks/support/issues/48
-[support#375]: https://github.com/pybricks/support/issues/375
-[support#378]: https://github.com/pybricks/support/issues/378
-[support#403]: https://github.com/pybricks/support/issues/403
-[support#412]: https://github.com/pybricks/support/issues/412
-[support#433]: https://github.com/pybricks/support/issues/433
 [v3.0.0]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#300---2021-06-08
-[v3.1.0a1]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#310a1---2021-06-23
-[v3.1.0a2]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#310a2---2021-07-06
-[v3.1.0a3]: https://github.com/pybricks/pybricks-micropython/blob/master/CHANGELOG.md#310a3---2021-07-19
 
-[Unreleased]: https://github.com/pybricks/pybricks-code/compare/v1.1.0-beta.5...HEAD
+<!-- links for version headings -->
+
+[Unreleased]: https://github.com/pybricks/pybricks-code/compare/v1.1.0-beta.6...HEAD
+[1.1.0-beta.6]: https://github.com/pybricks/pybricks-code/compare/v1.1.0-beta.5...v1.1.0-beta.6
 [1.1.0-beta.5]: https://github.com/pybricks/pybricks-code/compare/v1.1.0-beta.4...v1.1.0-beta.5
 [1.1.0-beta.4]: https://github.com/pybricks/pybricks-code/compare/v1.1.0-beta.3...v1.1.0-beta.4
 [1.1.0-beta.3]: https://github.com/pybricks/pybricks-code/compare/v1.1.0-beta.2...v1.1.0-beta.3
diff --git a/package.json b/package.json
index 62944488..cd5c9d8a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@pybricks/pybricks-code",
-    "version": "1.1.0-beta.5",
+    "version": "1.1.0-beta.6",
     "license": "MIT",
     "author": "The Pybricks Authors",
     "repository": {