diff --git a/README.md b/README.md
index b1bdfdf0..83465c27 100644
--- a/README.md
+++ b/README.md
@@ -297,10 +297,10 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
-[addon-aircast]: https://github.com/hassio-addons/addon-aircast/tree/v0.3.0
-[addon-doc-aircast]: https://github.com/hassio-addons/addon-aircast/blob/v0.3.0/README.md
+[addon-aircast]: https://github.com/hassio-addons/addon-aircast/tree/v0.4.0
+[addon-doc-aircast]: https://github.com/hassio-addons/addon-aircast/blob/v0.4.0/README.md
 [aircast-issue]: https://github.com/hassio-addons/addon-aircast/issues
-[aircast-version-shield]: https://img.shields.io/badge/version-v0.3.0-blue.svg
+[aircast-version-shield]: https://img.shields.io/badge/version-v0.4.0-blue.svg
 [aircast-pulls-shield]: https://img.shields.io/docker/pulls/hassioaddons/aircast-armhf.svg
 [aircast-aarch64-shield]: https://img.shields.io/badge/aarch64-yes-green.svg
 [aircast-amd64-shield]: https://img.shields.io/badge/amd64-yes-green.svg
diff --git a/aircast/CHANGELOG.md b/aircast/CHANGELOG.md
index 3d441134..27078ad5 100644
--- a/aircast/CHANGELOG.md
+++ b/aircast/CHANGELOG.md
@@ -1,13 +1,28 @@
-[Full Changelog][v0.2.0-v0.3.0]
+[Full Changelog][changelog]
 
 ### Added
 
-- Adds add-on icon
+- Adds .yamllint configuration
+- Adds Probot configuration
+- Adds initial add-on README template
+- Adds Gitlab CI
+
+### Fixed
+
+- Fixes Markdownlint warning in License
+- Fixes hadolint warnings
 
 ### Changed
 
-- Upgrades add-on base image to v1.0.0
-- Upgrades AirCast server to v0.2.0.5
-- Optimizes add-on logo
+- Replaces Changelog with GitHub releases
+- Adds all architectures to add-on config
+- Updates README
+- Changes add-on base to Ubuntu
+- Updates AirConnect to v0.2.0.8
 
-[v0.2.0-v0.3.0]: https://github.com/hassio-addons/addon-aircast/compare/v0.2.0...v0.3.0
\ No newline at end of file
+### Removed
+
+- Removes CodeClimate
+- Removes CircleCI
+
+[changelog]: https://github.com/hassio-addons/addon-aircast/compare/v0.3.0...v0.4.0
\ No newline at end of file
diff --git a/aircast/README.md b/aircast/README.md
new file mode 100644
index 00000000..098890ab
--- /dev/null
+++ b/aircast/README.md
@@ -0,0 +1,49 @@
+# Community Hass.io Add-ons: AirCast
+
+[![Release][release-shield]][release] ![Project Stage][project-stage-shield] ![Project Maintenance][maintenance-shield]
+
+[![Discord][discord-shield]][discord] [![Community Forum][forum-shield]][forum]
+
+[![Buy me a coffee][buymeacoffee-shield]][buymeacoffee]
+
+AirPlay capabilities for your Chromecast players.
+
+## About
+
+Apple devices use AirPlay to send audio to other devices, but this is not
+compatible with Google's Chromecast. This add-on tries to solve this
+compatibility gap.
+
+It detects Chromecast players in your network and creates virtual AirPlay
+devices for each of them. It acts as a bridge between the AirPlay client
+and the real Chromecast player.
+
+[Click here for the full documentation][docs]
+
+## WARNING! THIS IS A BETA VERSION!
+
+This Hass.io Add-ons repository contains beta releases of add-ons.
+
+- They might stop working at any time.
+- They could have a negative impact on your system.
+
+This repository was created for:
+
+- Anybody willing to test.
+- Anybody interested in trying out upcoming add-ons or add-on features.
+
+If you are more interested in stable releases of our add-ons:
+
+<https://github.com/hassio-addons/repository>
+
+[buymeacoffee-shield]: https://www.buymeacoffee.com/assets/img/guidelines/download-assets-sm-2.svg
+[buymeacoffee]: https://www.buymeacoffee.com/frenck
+[discord-shield]: https://img.shields.io/discord/330944238910963714.svg
+[discord]: https://discord.gg/c5DvZ4e
+[docs]: https://github.com/hassio-addons/addon-aircast/blob/v0.4.0/README.md
+[forum-shield]: https://img.shields.io/badge/community-forum-brightgreen.svg
+[forum]: https://community.home-assistant.io/t/community-hass-io-add-on-aircast/36742?u=frenck
+[maintenance-shield]: https://img.shields.io/maintenance/yes/2018.svg
+[project-stage-shield]: https://img.shields.io/badge/project%20stage-experimental-yellow.svg
+[release-shield]: https://img.shields.io/badge/version-v0.4.0-blue.svg
+[release]: https://github.com/hassio-addons/addon-aircast/tree/v0.4.0
\ No newline at end of file
diff --git a/aircast/config.json b/aircast/config.json
index 8b201335..cdbcf3dc 100644
--- a/aircast/config.json
+++ b/aircast/config.json
@@ -1,10 +1,16 @@
 {
   "name": "AirCast",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "slug": "aircast",
   "description": "AirPlay capabilities for your Chromecast devices.",
   "url": "https://community.home-assistant.io/t/community-hass-io-add-on-aircast/36742?u=frenck",
   "startup": "services",
+  "arch": [
+    "aarch64",
+    "amd64",
+    "armhf",
+    "i386"
+  ],
   "boot": "auto",
   "hassio_api": true,
   "homeassistant_api": false,