diff --git a/.coveragerc b/.coveragerc
index 576a0e96036..0078882e167 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -619,6 +619,7 @@ omit =
     homeassistant/components/modbus/modbus.py
     homeassistant/components/modbus/switch.py
     homeassistant/components/modbus/sensor.py
+    homeassistant/components/modbus/binary_sensor.py
     homeassistant/components/modem_callerid/sensor.py
     homeassistant/components/motion_blinds/__init__.py
     homeassistant/components/motion_blinds/const.py
diff --git a/homeassistant/components/modbus/binary_sensor.py b/homeassistant/components/modbus/binary_sensor.py
index c9f551e3d34..cd336ba4f73 100644
--- a/homeassistant/components/modbus/binary_sensor.py
+++ b/homeassistant/components/modbus/binary_sensor.py
@@ -170,6 +170,7 @@ class ModbusBinarySensor(BinarySensorEntity):
             result = self._hub.read_discrete_inputs(self._slave, self._address, 1)
         if result is None:
             self._available = False
+            self.schedule_update_ha_state()
             return
 
         self._value = result.bits[0] & 1
diff --git a/homeassistant/components/modbus/sensor.py b/homeassistant/components/modbus/sensor.py
index cb76bedd18f..89c68947d3f 100644
--- a/homeassistant/components/modbus/sensor.py
+++ b/homeassistant/components/modbus/sensor.py
@@ -294,6 +294,7 @@ class ModbusRegisterSensor(RestoreEntity, SensorEntity):
             )
         if result is None:
             self._available = False
+            self.schedule_update_ha_state()
             return
 
         registers = result.registers