diff --git a/custom_components/antistorm/binary_sensor.py b/custom_components/antistorm/binary_sensor.py
index af3a285..a6ceaa8 100644
--- a/custom_components/antistorm/binary_sensor.py
+++ b/custom_components/antistorm/binary_sensor.py
@@ -4,7 +4,7 @@
 import voluptuous as vol
 
 from homeassistant.components.binary_sensor import PLATFORM_SCHEMA, ENTITY_ID_FORMAT
-from homeassistant.const import CONF_MONITORED_CONDITIONS, CONF_NAME
+from homeassistant.const import CONF_MONITORED_CONDITIONS, CONF_NAME, ATTR_ATTRIBUTION
 import homeassistant.helpers.config_validation as cv
 from homeassistant.components.binary_sensor import BinarySensorDevice
 from homeassistant.helpers.entity import async_generate_entity_id
@@ -14,6 +14,7 @@
 CONF_STATION_ID = 'station_id'
 
 DEFAULT_NAME = 'Antistorm'
+ATTRIBUTION = 'Information provided by Antistorm.eu.'
 
 SENSOR_TYPES = {
     'storm_alarm': ['a_b', 'Alarm burzowy', 'mdi:weather-lightning'],
@@ -56,6 +57,12 @@ def __init__(self, entity_id, name, city_name, sensor_type, station_id):
         self._jsonParameter = SENSOR_TYPES[sensor_type][0]
         self._name = SENSOR_TYPES[sensor_type][1]
 
+    @property
+    def device_state_attributes(self):
+        output = dict()
+        output[ATTR_ATTRIBUTION] = ATTRIBUTION
+        return output
+
     @property
     def name(self):
         return '{} {} - {}'.format(self._name, self.city_name, SENSOR_TYPES[self.sensor_type][1])
diff --git a/custom_components/antistorm/sensor.py b/custom_components/antistorm/sensor.py
index 68f91cb..54bb52e 100644
--- a/custom_components/antistorm/sensor.py
+++ b/custom_components/antistorm/sensor.py
@@ -4,7 +4,7 @@
 import voluptuous as vol
 
 from homeassistant.components.sensor import (PLATFORM_SCHEMA, ENTITY_ID_FORMAT)
-from homeassistant.const import CONF_MONITORED_CONDITIONS, CONF_NAME
+from homeassistant.const import CONF_MONITORED_CONDITIONS, CONF_NAME, ATTR_ATTRIBUTION
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.entity import async_generate_entity_id
@@ -14,6 +14,7 @@
 CONF_STATION_ID = 'station_id'
 
 DEFAULT_NAME = 'Antistorm'
+ATTRIBUTION = 'Information provided by Antistorm.eu.'
 
 SENSOR_TYPES = {
     'storm_probability': ['p_b', 'Prawdopodobieństwo burzy', ' ', 'mdi:weather-lightning'],
@@ -58,6 +59,12 @@ def __init__(self, entity_id, name, city_name, sensor_type, station_id):
         self._name = SENSOR_TYPES[sensor_type][1]
         self._unit_of_measurement = SENSOR_TYPES[sensor_type][2]
 
+    @property
+    def device_state_attributes(self):
+        output = dict()
+        output[ATTR_ATTRIBUTION] = ATTRIBUTION
+        return output
+
     @property
     def name(self):
         return '{} {} - {}'.format(self._name, self.city_name, SENSOR_TYPES[self.sensor_type][1])