From 719f2e650cc9cf94a7ef4782c01ce85228f6ae56 Mon Sep 17 00:00:00 2001
From: Jorie Teunissen <38791331+Jorei@users.noreply.github.com>
Date: Mon, 16 Jan 2023 09:02:15 +0100
Subject: [PATCH] Add state_class to mill Estimated CO2 sensor (#85894)

---
 homeassistant/components/mill/sensor.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/homeassistant/components/mill/sensor.py b/homeassistant/components/mill/sensor.py
index 776ba1dc632..50db999186f 100644
--- a/homeassistant/components/mill/sensor.py
+++ b/homeassistant/components/mill/sensor.py
@@ -86,6 +86,7 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
         device_class=SensorDeviceClass.CO2,
         native_unit_of_measurement=CONCENTRATION_PARTS_PER_MILLION,
         name="Estimated CO2",
+        state_class=SensorStateClass.MEASUREMENT,
     ),
     SensorEntityDescription(
         key=TVOC,