diff --git a/homeassistant/components/climate/mill.py b/homeassistant/components/climate/mill.py
index afd655bed22..b735927cb80 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==0.3.3']
+REQUIREMENTS = ['millheater==0.3.4']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/requirements_all.txt b/requirements_all.txt
index b31ec2199d3..c1da51b4306 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -680,7 +680,7 @@ mficlient==0.3.0
 miflora==0.4.0
 
 # homeassistant.components.climate.mill
-millheater==0.3.3
+millheater==0.3.4
 
 # homeassistant.components.sensor.mitemp_bt
 mitemp_bt==0.0.1