diff --git a/homeassistant/components/demo/light.py b/homeassistant/components/demo/light.py
index 8bb4e403c3d..ec98a056b3e 100644
--- a/homeassistant/components/demo/light.py
+++ b/homeassistant/components/demo/light.py
@@ -13,6 +13,8 @@ from homeassistant.components.light import (
     ATTR_RGBW_COLOR,
     ATTR_RGBWW_COLOR,
     ATTR_WHITE,
+    DEFAULT_MAX_KELVIN,
+    DEFAULT_MIN_KELVIN,
     ColorMode,
     LightEntity,
     LightEntityFeature,
@@ -100,6 +102,9 @@ class DemoLight(LightEntity):
     _attr_name = None
     _attr_should_poll = False
 
+    _attr_max_color_temp_kelvin = DEFAULT_MAX_KELVIN
+    _attr_min_color_temp_kelvin = DEFAULT_MIN_KELVIN
+
     def __init__(
         self,
         unique_id: str,