diff --git a/homeassistant/components/touchline_sl/climate.py b/homeassistant/components/touchline_sl/climate.py
index 7c5ea4ea9ca..9b12230618a 100644
--- a/homeassistant/components/touchline_sl/climate.py
+++ b/homeassistant/components/touchline_sl/climate.py
@@ -15,6 +15,8 @@ from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from .coordinator import TouchlineSLConfigEntry, TouchlineSLModuleCoordinator
 from .entity import TouchlineSLZoneEntity
 
+PARALLEL_UPDATES = 1
+
 
 async def async_setup_entry(
     hass: HomeAssistant,