diff --git a/homeassistant/components/light/tradfri.py b/homeassistant/components/light/tradfri.py
index c3632351e5fa6..3cb22e666426d 100644
--- a/homeassistant/components/light/tradfri.py
+++ b/homeassistant/components/light/tradfri.py
@@ -109,9 +109,6 @@ def async_turn_on(self, **kwargs):
             keys['transition_time'] = int(kwargs[ATTR_TRANSITION]) * 10
 
         if ATTR_BRIGHTNESS in kwargs:
-            if kwargs[ATTR_BRIGHTNESS] == 255:
-                kwargs[ATTR_BRIGHTNESS] = 254
-
             self.hass.async_add_job(self._api(
                 self._group.set_dimmer(kwargs[ATTR_BRIGHTNESS], **keys)))
         else:
@@ -266,9 +263,6 @@ def async_turn_on(self, **kwargs):
             keys['transition_time'] = int(kwargs[ATTR_TRANSITION]) * 10
 
         if ATTR_BRIGHTNESS in kwargs:
-            if kwargs[ATTR_BRIGHTNESS] == 255:
-                kwargs[ATTR_BRIGHTNESS] = 254
-
             self.hass.async_add_job(self._api(
                 self._light_control.set_dimmer(kwargs[ATTR_BRIGHTNESS],
                                                **keys)))
diff --git a/homeassistant/components/tradfri.py b/homeassistant/components/tradfri.py
index ead4924d59999..647e6ebbb43e1 100644
--- a/homeassistant/components/tradfri.py
+++ b/homeassistant/components/tradfri.py
@@ -16,11 +16,7 @@
 from homeassistant.const import CONF_HOST
 from homeassistant.components.discovery import SERVICE_IKEA_TRADFRI
 
-REQUIREMENTS = ['pytradfri==4.0.1',
-                'DTLSSocket==0.1.4',
-                'https://github.com/chrysn/aiocoap/archive/'
-                '3286f48f0b949901c8b5c04c0719dc54ab63d431.zip'
-                '#aiocoap==0.3']
+REQUIREMENTS = ['pytradfri[async]==4.0.3']
 
 DOMAIN = 'tradfri'
 GATEWAY_IDENTITY = 'homeassistant'
diff --git a/requirements_all.txt b/requirements_all.txt
index dec8f96f39aaa..f94ac757e7fe6 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -18,9 +18,6 @@ certifi>=2017.4.17
 # homeassistant.components.bbb_gpio
 # Adafruit_BBIO==1.0.0
 
-# homeassistant.components.tradfri
-# DTLSSocket==0.1.4
-
 # homeassistant.components.doorbird
 DoorBirdPy==0.0.4
 
@@ -344,9 +341,6 @@ httplib2==0.10.3
 # homeassistant.components.media_player.braviatv
 https://github.com/aparraga/braviarc/archive/0.3.7.zip#braviarc==0.3.7
 
-# homeassistant.components.tradfri
-# https://github.com/chrysn/aiocoap/archive/3286f48f0b949901c8b5c04c0719dc54ab63d431.zip#aiocoap==0.3
-
 # homeassistant.components.media_player.spotify
 https://github.com/happyleavesaoc/spotipy/archive/544614f4b1d508201d363e84e871f86c90aa26b2.zip#spotipy==2.4.4
 
@@ -896,7 +890,7 @@ pythonwhois==2.4.3
 pytrackr==0.0.5
 
 # homeassistant.components.tradfri
-pytradfri==4.0.1
+# pytradfri[async]==4.0.3
 
 # homeassistant.components.device_tracker.unifi
 pyunifi==2.13
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index 9d9725e9e6a3f..159faf7ccead1 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -31,8 +31,7 @@
     'envirophat',
     'i2csense',
     'credstash',
-    'aiocoap',  # Temp, will be removed when Python 3.4 is no longer supported.
-    'DTLSSocket'  # Requires cython.
+    'pytradfri'
 )
 
 TEST_REQUIREMENTS = (