diff --git a/pkgs/development/python-modules/hahomematic/default.nix b/pkgs/development/python-modules/hahomematic/default.nix
index 3b068917c652e..63a93a7ed5b70 100644
--- a/pkgs/development/python-modules/hahomematic/default.nix
+++ b/pkgs/development/python-modules/hahomematic/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "hahomematic";
-  version = "2024.12.2";
+  version = "2024.12.0";
   pyproject = true;
 
   disabled = pythonOlder "3.12";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     owner = "danielperna84";
     repo = "hahomematic";
     rev = "refs/tags/${version}";
-    hash = "sha256-pQiOi6uJcfeBOPmL9MksHLqnemHD9Qk6e7QTI9J3NCc=";
+    hash = "sha256-RLgJiapsRM8dMA4+T2S6DkSFjo+YBmVVpo1mOVKJ7EI=";
   };
 
   __darwinAllowLocalNetworking = true;
diff --git a/pkgs/servers/home-assistant/custom-components/homematicip_local/package.nix b/pkgs/servers/home-assistant/custom-components/homematicip_local/package.nix
index 857867e349ad4..6c99b07f4c3ac 100644
--- a/pkgs/servers/home-assistant/custom-components/homematicip_local/package.nix
+++ b/pkgs/servers/home-assistant/custom-components/homematicip_local/package.nix
@@ -3,20 +3,28 @@
   buildHomeAssistantComponent,
   fetchFromGitHub,
   hahomematic,
+  home-assistant,
 }:
 
 buildHomeAssistantComponent rec {
   owner = "danielperna84";
   domain = "homematicip_local";
-  version = "1.74.0";
+  version = "1.73.0";
 
   src = fetchFromGitHub {
     owner = "danielperna84";
     repo = "custom_homematic";
     rev = "refs/tags/${version}";
-    hash = "sha256-UdM/T68VK3Dh585rm3qnZ9LtRgpumfzk4TaGGIfYdoM=";
+    hash = "sha256-1ssmaX6G03i9KYgjCRMZqOG2apEZ0069fQnmVy2BVhA=";
   };
 
+  postPatch = ''
+    min_ha_version="$(sed -nr 's/^HMIP_LOCAL_MIN_HA_VERSION.*= "([0-9.]+)"$/\1/p' custom_components/homematicip_local/const.py)"
+    test \
+      "$(printf '%s\n' "$min_ha_version" "${home-assistant.version}" | sort -V | head -n1)" = "$min_ha_version" \
+      || (echo "error: only Home Assistant >= $min_ha_version is supported" && exit 1)
+  '';
+
   dependencies = [
     hahomematic
   ];