diff --git a/homeassistant/components/sensor/moon.py b/homeassistant/components/sensor/moon.py
index b2ee4574eda..3b13e625bb4 100644
--- a/homeassistant/components/sensor/moon.py
+++ b/homeassistant/components/sensor/moon.py
@@ -15,7 +15,7 @@ import homeassistant.util.dt as dt_util
 from homeassistant.helpers.entity import Entity
 import homeassistant.helpers.config_validation as cv
 
-REQUIREMENTS = ['astral==1.3.3']
+REQUIREMENTS = ['astral==1.3.4']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/sun.py b/homeassistant/components/sun.py
index 92349be6376..00a9370a446 100644
--- a/homeassistant/components/sun.py
+++ b/homeassistant/components/sun.py
@@ -17,7 +17,7 @@ from homeassistant.util import dt as dt_util
 import homeassistant.helpers.config_validation as cv
 import homeassistant.util as util
 
-REQUIREMENTS = ['astral==1.3.3']
+REQUIREMENTS = ['astral==1.3.4']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/requirements_all.txt b/requirements_all.txt
index 232ce6bd797..0cda98cf8d6 100755
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -52,7 +52,7 @@ apns2==0.1.1
 
 # homeassistant.components.sun
 # homeassistant.components.sensor.moon
-astral==1.3.3
+astral==1.3.4
 
 # homeassistant.components.light.avion
 # avion==0.5