diff --git a/homeassistant/components/climate/mill.py b/homeassistant/components/climate/mill.py
index 48b15400a43..afd655bed22 100644
--- a/homeassistant/components/climate/mill.py
+++ b/homeassistant/components/climate/mill.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
 from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 
-REQUIREMENTS = ['millheater==0.3.0']
+REQUIREMENTS = ['millheater==0.3.3']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/requirements_all.txt b/requirements_all.txt
index 58a4a9d5c9f..d7240b0d56b 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -662,7 +662,7 @@ mficlient==0.3.0
 miflora==0.4.0
 
 # homeassistant.components.climate.mill
-millheater==0.3.0
+millheater==0.3.3
 
 # homeassistant.components.sensor.mitemp_bt
 mitemp_bt==0.0.1