diff --git a/README.md b/README.md
index 2cd6b81d..48c23632 100644
--- a/README.md
+++ b/README.md
@@ -687,10 +687,10 @@ 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-adguard]: https://github.com/hassio-addons/addon-adguard-home/tree/v4.1.9
-[addon-doc-adguard]: https://github.com/hassio-addons/addon-adguard-home/blob/v4.1.9/README.md
+[addon-adguard]: https://github.com/hassio-addons/addon-adguard-home/tree/v4.2.0
+[addon-doc-adguard]: https://github.com/hassio-addons/addon-adguard-home/blob/v4.2.0/README.md
 [adguard-issue]: https://github.com/hassio-addons/addon-adguard-home/issues
-[adguard-version-shield]: https://img.shields.io/badge/version-v4.1.9-blue.svg
+[adguard-version-shield]: https://img.shields.io/badge/version-v4.2.0-blue.svg
 [adguard-aarch64-shield]: https://img.shields.io/badge/aarch64-yes-green.svg
 [adguard-amd64-shield]: https://img.shields.io/badge/amd64-yes-green.svg
 [adguard-armhf-shield]: https://img.shields.io/badge/armhf-yes-green.svg
diff --git a/adguard/CHANGELOG.md b/adguard/CHANGELOG.md
index 5bc163d6..46d2cb7d 100644
--- a/adguard/CHANGELOG.md
+++ b/adguard/CHANGELOG.md
@@ -1,5 +1,26 @@
 ## What’s changed
 
-## 🐛 Bug fixes
+Intermediate release, upgrading foundations, and fixing the snapshot warnings.
 
-- 🚑 Fix invalid yq structure in NGINX https logic @frenck (#237)
+## 🚀 Enhancements
+
+- Rename snapshot_exclude to backup_exclude @ludeeus (#226)
+- Migrate JSON config to YAML @frenck (#272)
+
+## 🧰 Maintenance
+
+- Switch to centralized GitHub Action Workflows @frenck (#271)
+
+## ⬆️ Dependency updates
+
+- ⬆️ Bump dessant/lock-threads from 2.1.1 to 2.1.2 @dependabot (#240)
+- ⬆️ Bump docker/build-push-action from 2.6.1 to 2.7.0 @dependabot (#242)
+- ⬆️ Bump frenck/action-addon-linter from 2.2 to 2.3 @dependabot (#244)
+- ⬆️ Bump frenck/action-addon-linter from 2.3 to 2.4.1 @dependabot (#256)
+- ⬆️ Bump docker/setup-buildx-action from 1.5.1 to 1.6.0 @dependabot (#247)
+- ⬆️ Bump creyD/prettier_action from 3.3 to 4.0 @dependabot (#248)
+- ⬆️ Upgrade lock-threads workflow to 3.0.0 @frenck (#261)
+- ⬆️ Upgrades add-on base image to 10.1.1 @frenck (#260)
+- ⬆️ Bump actions/checkout from 2.3.4 to 2.3.5 @dependabot (#264)
+- ⬆️ Upgrades add-on base image to 10.2.0 @frenck (#273)
+- ⬆️ Upgrades add-on base image to 10.2.2 @frenck (#275)
diff --git a/adguard/README.md b/adguard/README.md
index e0e9f968..79ee6b91 100644
--- a/adguard/README.md
+++ b/adguard/README.md
@@ -48,6 +48,6 @@ If you are more interested in stable releases of our add-ons:
 [patreon-shield]: https://frenck.dev/wp-content/uploads/2019/12/patreon.png
 [patreon]: https://www.patreon.com/frenck
 [project-stage-shield]: https://img.shields.io/badge/project%20stage-production%20ready-brightgreen.svg
-[release-shield]: https://img.shields.io/badge/version-v4.1.9-blue.svg
-[release]: https://github.com/hassio-addons/addon-adguard-home/tree/v4.1.9
-[screenshot]: https://github.com/hassio-addons/addon-adguard-home/raw/v4.1.9/images/screenshot.png
\ No newline at end of file
+[release-shield]: https://img.shields.io/badge/version-v4.2.0-blue.svg
+[release]: https://github.com/hassio-addons/addon-adguard-home/tree/v4.2.0
+[screenshot]: https://github.com/hassio-addons/addon-adguard-home/raw/v4.2.0/images/screenshot.png
\ No newline at end of file
diff --git a/adguard/config.json b/adguard/config.json
deleted file mode 100644
index fdab9722..00000000
--- a/adguard/config.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "name": "AdGuard Home",
-  "version": "4.1.9",
-  "slug": "adguard",
-  "description": "Network-wide ads & trackers blocking DNS server",
-  "url": "https://github.com/hassio-addons/addon-adguard-home",
-  "ingress": true,
-  "ingress_port": 0,
-  "ingress_stream": true,
-  "panel_icon": "mdi:shield-check",
-  "startup": "services",
-  "homeassistant": "0.113.2",
-  "arch": [
-    "aarch64",
-    "amd64",
-    "armhf",
-    "armv7",
-    "i386"
-  ],
-  "init": false,
-  "ports": {
-    "53/udp": 53,
-    "80/tcp": null
-  },
-  "ports_description": {
-    "53/udp": "DNS server port",
-    "80/tcp": "Web interface (Not required for Ingress)"
-  },
-  "discovery": [
-    "adguard"
-  ],
-  "auth_api": true,
-  "host_network": true,
-  "hassio_api": true,
-  "hassio_role": "manager",
-  "map": [
-    "ssl"
-  ],
-  "options": {
-    "ssl": true,
-    "certfile": "fullchain.pem",
-    "keyfile": "privkey.pem"
-  },
-  "schema": {
-    "log_level": "list(trace|debug|info|notice|warning|error|fatal)?",
-    "ssl": "bool",
-    "certfile": "str",
-    "keyfile": "str",
-    "leave_front_door_open": "bool?"
-  },
-  "snapshot_exclude": [
-    "*/adguard/data/querylog.json"
-  ],
-  "image": "ghcr.io/hassio-addons/adguard/{arch}"
-}
\ No newline at end of file
diff --git a/adguard/config.yaml b/adguard/config.yaml
new file mode 100644
index 00000000..1863b00f
--- /dev/null
+++ b/adguard/config.yaml
@@ -0,0 +1,45 @@
+arch:
+- aarch64
+- amd64
+- armhf
+- armv7
+- i386
+auth_api: true
+backup_exclude:
+- '*/adguard/data/querylog.json'
+description: Network-wide ads & trackers blocking DNS server
+discovery:
+- adguard
+hassio_api: true
+hassio_role: manager
+homeassistant: 0.113.2
+host_network: true
+image: ghcr.io/hassio-addons/adguard/{arch}
+ingress: true
+ingress_port: 0
+ingress_stream: true
+init: false
+map:
+- ssl
+name: AdGuard Home
+options:
+  certfile: fullchain.pem
+  keyfile: privkey.pem
+  ssl: true
+panel_icon: mdi:shield-check
+ports:
+  53/udp: 53
+  80/tcp: null
+ports_description:
+  53/udp: DNS server port
+  80/tcp: Web interface (Not required for Ingress)
+schema:
+  certfile: str
+  keyfile: str
+  leave_front_door_open: bool?
+  log_level: list(trace|debug|info|notice|warning|error|fatal)?
+  ssl: bool
+slug: adguard
+startup: services
+url: https://github.com/hassio-addons/addon-adguard-home
+version: 4.2.0