diff --git a/homeassistant/components/notion/__init__.py b/homeassistant/components/notion/__init__.py
index f387e820253..e9c45c62816 100644
--- a/homeassistant/components/notion/__init__.py
+++ b/homeassistant/components/notion/__init__.py
@@ -306,13 +306,22 @@ class NotionEntity(Entity):
         def update():
             """Update the entity."""
             self.hass.async_create_task(self._update_bridge_id())
-            self.async_schedule_update_ha_state(True)
+            self.update_from_latest_data()
+            self.async_write_ha_state()
 
         self._async_unsub_dispatcher_connect = async_dispatcher_connect(
             self.hass, TOPIC_DATA_UPDATE, update
         )
 
+        self.update_from_latest_data()
+
     async def async_will_remove_from_hass(self):
         """Disconnect dispatcher listener when removed."""
         if self._async_unsub_dispatcher_connect:
             self._async_unsub_dispatcher_connect()
+            self._async_unsub_dispatcher_connect = None
+
+    @callback
+    def update_from_latest_data(self):
+        """Update the entity from the latest data."""
+        raise NotImplementedError
diff --git a/homeassistant/components/notion/binary_sensor.py b/homeassistant/components/notion/binary_sensor.py
index 5079348e821..53a98204704 100644
--- a/homeassistant/components/notion/binary_sensor.py
+++ b/homeassistant/components/notion/binary_sensor.py
@@ -2,6 +2,7 @@
 import logging
 
 from homeassistant.components.binary_sensor import BinarySensorDevice
+from homeassistant.core import callback
 
 from . import (
     BINARY_SENSOR_TYPES,
@@ -75,7 +76,8 @@ class NotionBinarySensor(NotionEntity, BinarySensorDevice):
         if task["task_type"] == SENSOR_SMOKE_CO:
             return self._state != "no_alarm"
 
-    async def async_update(self):
+    @callback
+    def update_from_latest_data(self):
         """Fetch new state data for the sensor."""
         task = self._notion.tasks[self._task_id]
 
diff --git a/homeassistant/components/notion/sensor.py b/homeassistant/components/notion/sensor.py
index 0e1c9f25cb2..918ee8c5f95 100644
--- a/homeassistant/components/notion/sensor.py
+++ b/homeassistant/components/notion/sensor.py
@@ -1,6 +1,8 @@
 """Support for Notion sensors."""
 import logging
 
+from homeassistant.core import callback
+
 from . import SENSOR_TEMPERATURE, SENSOR_TYPES, NotionEntity
 from .const import DATA_CLIENT, DOMAIN
 
@@ -58,7 +60,8 @@ class NotionSensor(NotionEntity):
         """Return the unit of measurement."""
         return self._unit
 
-    async def async_update(self):
+    @callback
+    def update_from_latest_data(self):
         """Fetch new state data for the sensor."""
         task = self._notion.tasks[self._task_id]