diff --git a/homeassistant/components/sensor/darksky.py b/homeassistant/components/sensor/darksky.py
index e224feb7db7..3049415c754 100644
--- a/homeassistant/components/sensor/darksky.py
+++ b/homeassistant/components/sensor/darksky.py
@@ -19,7 +19,7 @@ from homeassistant.helpers.entity import Entity
 from homeassistant.util import Throttle
 import homeassistant.helpers.config_validation as cv
 
-REQUIREMENTS = ['python-forecastio==1.3.5']
+REQUIREMENTS = ['python-forecastio==1.4.0']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/weather/darksky.py b/homeassistant/components/weather/darksky.py
index 139f8abfce6..52aa8c46046 100644
--- a/homeassistant/components/weather/darksky.py
+++ b/homeassistant/components/weather/darksky.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
 import homeassistant.helpers.config_validation as cv
 from homeassistant.util import Throttle
 
-REQUIREMENTS = ['python-forecastio==1.3.5']
+REQUIREMENTS = ['python-forecastio==1.4.0']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/requirements_all.txt b/requirements_all.txt
index 33fb1789b46..47b38a876f7 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -918,7 +918,7 @@ python-etherscan-api==0.0.3
 
 # homeassistant.components.sensor.darksky
 # homeassistant.components.weather.darksky
-python-forecastio==1.3.5
+python-forecastio==1.4.0
 
 # homeassistant.components.gc100
 python-gc100==1.0.3a
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 6e58464efe5..0a7c3b493d4 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -144,7 +144,7 @@ pynx584==0.4
 
 # homeassistant.components.sensor.darksky
 # homeassistant.components.weather.darksky
-python-forecastio==1.3.5
+python-forecastio==1.4.0
 
 # homeassistant.components.sensor.whois
 pythonwhois==2.4.3