diff --git a/homeassistant/components/sensor/systemmonitor.py b/homeassistant/components/sensor/systemmonitor.py
index 66b6b9c4d8e..20af7e71a59 100755
--- a/homeassistant/components/sensor/systemmonitor.py
+++ b/homeassistant/components/sensor/systemmonitor.py
@@ -10,7 +10,7 @@ import homeassistant.util.dt as dt_util
 from homeassistant.const import STATE_OFF, STATE_ON
 from homeassistant.helpers.entity import Entity
 
-REQUIREMENTS = ['psutil==4.1.0']
+REQUIREMENTS = ['psutil==4.2.0']
 SENSOR_TYPES = {
     'disk_use_percent': ['Disk Use', '%', 'mdi:harddisk'],
     'disk_use': ['Disk Use', 'GiB', 'mdi:harddisk'],
diff --git a/requirements_all.txt b/requirements_all.txt
index cb7bb18c8ec..b1508ae2321 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -193,7 +193,7 @@ plexapi==1.1.0
 proliphix==0.1.0
 
 # homeassistant.components.sensor.systemmonitor
-psutil==4.1.0
+psutil==4.2.0
 
 # homeassistant.components.notify.pushbullet
 pushbullet.py==0.10.0