diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 62a86f3..ea5eb7a 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,4 +1,12 @@
 repos:
+  - repo: local
+    hooks:
+      - id: sync-ha-version
+        name: Sync HA version from hacs.json
+        entry: python scripts/sync_ha_version.py
+        language: system
+        pass_filenames: false
+        files: ^(hacs\.json|requirements_dev\.txt)$
   - repo: https://github.com/asottile/pyupgrade
     rev: v3.3.1
     hooks:
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 2c9a326..62999b0 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,5 +1,5 @@
 -r requirements.txt
-homeassistant==2022.7.7
+homeassistant==2024.12.0b0
 black
 isort
 flake8
diff --git a/scripts/sync_ha_version.py b/scripts/sync_ha_version.py
new file mode 100644
index 0000000..2a594f1
--- /dev/null
+++ b/scripts/sync_ha_version.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+"""Sync homeassistant version in requirements_dev.txt to hacs.json."""
+import json
+import re
+from pathlib import Path
+
+
+def main() -> int:
+    root = Path(__file__).parent.parent
+
+    with open(root / "hacs.json") as f:
+        expected = json.load(f)["homeassistant"]
+
+    req_path = root / "requirements_dev.txt"
+    with open(req_path) as f:
+        req_text = f.read()
+    new_req = re.sub(r"^homeassistant==.+$", f"homeassistant=={expected}", req_text, flags=re.MULTILINE)
+    if new_req != req_text:
+        with open(req_path, "w") as f:
+            f.write(new_req)
+        print(f"Fixed requirements_dev.txt homeassistant -> {expected}")
+        return 1
+
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())