diff --git a/homeassistant/components/sensor/tibber.py b/homeassistant/components/sensor/tibber.py
index a5f490c8d51..8c8ffdfd954 100644
--- a/homeassistant/components/sensor/tibber.py
+++ b/homeassistant/components/sensor/tibber.py
@@ -20,7 +20,7 @@ from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.entity import Entity
 from homeassistant.util import dt as dt_util
 
-REQUIREMENTS = ['pyTibber==0.3.2']
+REQUIREMENTS = ['pyTibber==0.4.0']
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -76,7 +76,7 @@ class TibberSensor(Entity):
                 price_time = dt_util.as_utc(dt_util.parse_datetime(key))
                 time_diff = (now - price_time).total_seconds()/60
                 if time_diff >= 0 and time_diff < 60:
-                    self._state = round(price_total, 2)
+                    self._state = round(price_total, 3)
                     self._last_updated = key
                     return True
             return False
diff --git a/requirements_all.txt b/requirements_all.txt
index d53f4e39b36..fab0675d1e6 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -645,7 +645,7 @@ pyHS100==0.3.0
 pyRFXtrx==0.21.1
 
 # homeassistant.components.sensor.tibber
-pyTibber==0.3.2
+pyTibber==0.4.0
 
 # homeassistant.components.switch.dlink
 pyW215==0.6.0