diff --git a/custom_components/aquarea/sensor.py b/custom_components/aquarea/sensor.py
index bb8ef80..4901ec3 100644
--- a/custom_components/aquarea/sensor.py
+++ b/custom_components/aquarea/sensor.py
@@ -20,7 +20,14 @@
     CONF_DEVICE_CLASS,
     CONF_UNIT_OF_MEASUREMENT,
 )
-from homeassistant.helpers.trigger_template_entity import CONF_AVAILABILITY
+_LOGGER = logging.getLogger(__name__)
+try:
+    from homeassistant.helpers.trigger_template_entity import CONF_AVAILABILITY
+except:
+    # TODO(kamaradclimber): remove this once we stop support 2023.8 and below
+    _LOGGER.warn("backward compatibility mode: please update to HA 2023.9 eventually")
+    from homeassistant.helpers.template_entity import CONF_AVAILABILITY
+
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -30,7 +37,6 @@
 from .definitions import build_sensors, HeishaMonSensorEntityDescription
 from . import build_device_info
 
-_LOGGER = logging.getLogger(__name__)
 
 # async_setup_platform should be defined if one wants to support config via configuration.yaml
 
diff --git a/hacs.json b/hacs.json
index 7fa7a9a..e3159c0 100644
--- a/hacs.json
+++ b/hacs.json
@@ -1,5 +1,5 @@
 {
   "name": "HeishaMon",
   "render_readme": true,
-  "homeassistant": "2023.9.0"
+  "homeassistant": "2023.2"
 }