diff --git a/homeassistant/components/light/mystrom.py b/homeassistant/components/light/mystrom.py
index d9312e6aadc..8d7fb807c6d 100644
--- a/homeassistant/components/light/mystrom.py
+++ b/homeassistant/components/light/mystrom.py
@@ -15,7 +15,7 @@ from homeassistant.components.light import (
     ATTR_HS_COLOR)
 from homeassistant.const import CONF_HOST, CONF_MAC, CONF_NAME, STATE_UNKNOWN
 
-REQUIREMENTS = ['python-mystrom==0.3.8']
+REQUIREMENTS = ['python-mystrom==0.4.2']
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -43,7 +43,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
 
 def setup_platform(hass, config, add_devices, discovery_info=None):
     """Set up the myStrom Light platform."""
-    from pymystrom import MyStromBulb
+    from pymystrom.bulb import MyStromBulb
     from pymystrom.exceptions import MyStromConnectionError
 
     host = config.get(CONF_HOST)
diff --git a/homeassistant/components/switch/mystrom.py b/homeassistant/components/switch/mystrom.py
index e813da43dfa..0a87d41d2fe 100644
--- a/homeassistant/components/switch/mystrom.py
+++ b/homeassistant/components/switch/mystrom.py
@@ -12,7 +12,7 @@ from homeassistant.components.switch import (SwitchDevice, PLATFORM_SCHEMA)
 from homeassistant.const import (CONF_NAME, CONF_HOST)
 import homeassistant.helpers.config_validation as cv
 
-REQUIREMENTS = ['python-mystrom==0.3.8']
+REQUIREMENTS = ['python-mystrom==0.4.2']
 
 DEFAULT_NAME = 'myStrom Switch'
 
@@ -26,7 +26,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
 
 def setup_platform(hass, config, add_devices, discovery_info=None):
     """Find and return myStrom switch."""
-    from pymystrom import MyStromPlug, exceptions
+    from pymystrom.switch import MyStromPlug, exceptions
 
     name = config.get(CONF_NAME)
     host = config.get(CONF_HOST)
@@ -45,7 +45,7 @@ class MyStromSwitch(SwitchDevice):
 
     def __init__(self, name, resource):
         """Initialize the myStrom switch."""
-        from pymystrom import MyStromPlug
+        from pymystrom.switch import MyStromPlug
 
         self._name = name
         self._resource = resource
diff --git a/requirements_all.txt b/requirements_all.txt
index e8baacf7d2e..026892099f1 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -955,7 +955,7 @@ python-mpd2==0.5.5
 
 # homeassistant.components.light.mystrom
 # homeassistant.components.switch.mystrom
-python-mystrom==0.3.8
+python-mystrom==0.4.2
 
 # homeassistant.components.nest
 python-nest==3.7.0