diff --git a/homeassistant/components/homekit/accessories.py b/homeassistant/components/homekit/accessories.py
index d9b90a77d68de8..3ddc15307c2c47 100644
--- a/homeassistant/components/homekit/accessories.py
+++ b/homeassistant/components/homekit/accessories.py
@@ -7,6 +7,7 @@
 from pyhap.accessory import Accessory, Bridge, Category
 from pyhap.accessory_driver import AccessoryDriver
 
+from homeassistant.const import __version__
 from homeassistant.core import callback as ha_callback
 from homeassistant.helpers.event import (
     async_track_state_change, track_point_in_utc_time)
@@ -14,7 +15,7 @@
 
 from .const import (
     DEBOUNCE_TIMEOUT, BRIDGE_MODEL, BRIDGE_NAME, MANUFACTURER,
-    SERV_ACCESSORY_INFO, CHAR_MANUFACTURER,
+    SERV_ACCESSORY_INFO, CHAR_FIRMWARE_REVISION, CHAR_MANUFACTURER,
     CHAR_MODEL, CHAR_NAME, CHAR_SERIAL_NUMBER)
 from .util import (
     show_setup_message, dismiss_setup_message)
@@ -85,13 +86,15 @@ def setup_char(char_name, service, value=None, properties=None, callback=None):
 
 
 def set_accessory_info(acc, name, model, manufacturer=MANUFACTURER,
-                       serial_number='0000'):
+                       serial_number='0000', firmware_revision=__version__):
     """Set the default accessory information."""
     service = acc.get_service(SERV_ACCESSORY_INFO)
     service.get_characteristic(CHAR_NAME).set_value(name)
     service.get_characteristic(CHAR_MODEL).set_value(model)
     service.get_characteristic(CHAR_MANUFACTURER).set_value(manufacturer)
     service.get_characteristic(CHAR_SERIAL_NUMBER).set_value(serial_number)
+    (service.get_characteristic(CHAR_FIRMWARE_REVISION)
+     .set_value(firmware_revision))
 
 
 class HomeAccessory(Accessory):
diff --git a/homeassistant/components/homekit/const.py b/homeassistant/components/homekit/const.py
index 59444c754213f6..432cfe096ee244 100644
--- a/homeassistant/components/homekit/const.py
+++ b/homeassistant/components/homekit/const.py
@@ -74,6 +74,7 @@
 CHAR_CURRENT_HUMIDITY = 'CurrentRelativeHumidity'  # percent
 CHAR_CURRENT_SECURITY_STATE = 'SecuritySystemCurrentState'
 CHAR_CURRENT_TEMPERATURE = 'CurrentTemperature'
+CHAR_FIRMWARE_REVISION = 'FirmwareRevision'
 CHAR_HEATING_THRESHOLD_TEMPERATURE = 'HeatingThresholdTemperature'
 CHAR_HUE = 'Hue'  # arcdegress | [0, 360]
 CHAR_LEAK_DETECTED = 'LeakDetected'
diff --git a/tests/components/homekit/test_accessories.py b/tests/components/homekit/test_accessories.py
index f8e026483aaedf..53dbdb7d8d0769 100644
--- a/tests/components/homekit/test_accessories.py
+++ b/tests/components/homekit/test_accessories.py
@@ -10,7 +10,7 @@
     add_preload_service, set_accessory_info,
     debounce, HomeAccessory, HomeBridge, HomeDriver)
 from homeassistant.components.homekit.const import (
-    BRIDGE_MODEL, BRIDGE_NAME, SERV_ACCESSORY_INFO,
+    BRIDGE_MODEL, BRIDGE_NAME, SERV_ACCESSORY_INFO, CHAR_FIRMWARE_REVISION,
     CHAR_MANUFACTURER, CHAR_MODEL, CHAR_NAME, CHAR_SERIAL_NUMBER)
 from homeassistant.const import ATTR_NOW, EVENT_TIME_CHANGED
 import homeassistant.util.dt as dt_util
@@ -92,7 +92,8 @@ def test_set_accessory_info(self):
         """Test setting the basic accessory information."""
         # Test HomeAccessory
         acc = HomeAccessory('HA', 'Home Accessory', 'homekit.accessory', 2, '')
-        set_accessory_info(acc, 'name', 'model', 'manufacturer', '0000')
+        set_accessory_info(acc, 'name', 'model', 'manufacturer', '0000',
+                           '1.2.3')
 
         serv = acc.get_service(SERV_ACCESSORY_INFO)
         self.assertEqual(serv.get_characteristic(CHAR_NAME).value, 'name')
@@ -101,10 +102,13 @@ def test_set_accessory_info(self):
             serv.get_characteristic(CHAR_MANUFACTURER).value, 'manufacturer')
         self.assertEqual(
             serv.get_characteristic(CHAR_SERIAL_NUMBER).value, '0000')
+        self.assertEqual(
+            serv.get_characteristic(CHAR_FIRMWARE_REVISION).value, '1.2.3')
 
         # Test HomeBridge
         acc = HomeBridge('hass')
-        set_accessory_info(acc, 'name', 'model', 'manufacturer', '0000')
+        set_accessory_info(acc, 'name', 'model', 'manufacturer', '0000',
+                           '1.2.3')
 
         serv = acc.get_service(SERV_ACCESSORY_INFO)
         self.assertEqual(serv.get_characteristic(CHAR_MODEL).value, 'model')
@@ -112,6 +116,8 @@ def test_set_accessory_info(self):
             serv.get_characteristic(CHAR_MANUFACTURER).value, 'manufacturer')
         self.assertEqual(
             serv.get_characteristic(CHAR_SERIAL_NUMBER).value, '0000')
+        self.assertEqual(
+            serv.get_characteristic(CHAR_FIRMWARE_REVISION).value, '1.2.3')
 
     def test_home_accessory(self):
         """Test HomeAccessory class."""