diff --git a/.github/workflows/hassfest.yaml b/.github/workflows/hassfest.yaml
new file mode 100644
index 0000000..07d1dda
--- /dev/null
+++ b/.github/workflows/hassfest.yaml
@@ -0,0 +1,14 @@
+name: Validate with hassfest
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  validate:
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: "actions/checkout@v3"
+      - uses: home-assistant/actions/hassfest@master
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 89c66ac..c8e920d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -33,6 +33,8 @@ repos:
 
       - id: check-yaml
 
+      - id: check-json
+
   - repo: https://github.com/igorshubovych/markdownlint-cli
     rev: v0.39.0
     hooks:
diff --git a/custom_components/sunpower/manifest.json b/custom_components/sunpower/manifest.json
index ecf56e9..ad7282e 100644
--- a/custom_components/sunpower/manifest.json
+++ b/custom_components/sunpower/manifest.json
@@ -1,14 +1,15 @@
 {
-  "version": "2024.4.2",
   "domain": "sunpower",
   "name": "sunpower",
+  "codeowners": ["@krbaker"],
   "config_flow": true,
+  "dependencies": [],
   "documentation": "https://github.com/krbaker/hass-sunpower",
+  "homekit": {},
+  "iot_class": "cloud_polling",
+  "issue_tracker": "https://github.com/krbaker/hass-sunpower/issues",
   "requirements": ["requests"],
   "ssdp": [],
-  "zeroconf": [],
-  "homekit": {},
-  "dependencies": [],
-  "codeowners": ["@krbaker"],
-  "issue_tracker": "https://github.com/krbaker/hass-sunpower/issues"
+  "version": "2024.4.2",
+  "zeroconf": []
 }