diff --git a/homeassistant/components/notion/__init__.py b/homeassistant/components/notion/__init__.py
index be4a47c6d85..561f3edf896 100644
--- a/homeassistant/components/notion/__init__.py
+++ b/homeassistant/components/notion/__init__.py
@@ -160,14 +160,17 @@ class NotionEntity(CoordinatorEntity):
         self._sensor_id = sensor_id
         self._state = None
         self._system_id = system_id
-        self._task_id = task_id
+        self._unique_id = (
+            f'{sensor_id}_{self.coordinator.data["tasks"][task_id]["task_type"]}'
+        )
+        self.task_id = task_id
 
     @property
     def available(self) -> bool:
         """Return True if entity is available."""
         return (
             self.coordinator.last_update_success
-            and self._task_id in self.coordinator.data["tasks"]
+            and self.task_id in self.coordinator.data["tasks"]
         )
 
     @property
@@ -204,8 +207,7 @@ class NotionEntity(CoordinatorEntity):
     @property
     def unique_id(self) -> str:
         """Return a unique, unchanging string that represents this entity."""
-        task = self.coordinator.data["tasks"][self._task_id]
-        return f'{self._sensor_id}_{task["task_type"]}'
+        return self._unique_id
 
     async def _async_update_bridge_id(self) -> None:
         """Update the entity's bridge ID if it has changed.
@@ -246,8 +248,10 @@ class NotionEntity(CoordinatorEntity):
     @callback
     def _handle_coordinator_update(self):
         """Respond to a DataUpdateCoordinator update."""
-        self.hass.async_create_task(self._async_update_bridge_id())
-        self._async_update_from_latest_data()
+        if self.task_id in self.coordinator.data["tasks"]:
+            self.hass.async_create_task(self._async_update_bridge_id())
+            self._async_update_from_latest_data()
+
         self.async_write_ha_state()
 
     async def async_added_to_hass(self):
diff --git a/homeassistant/components/notion/binary_sensor.py b/homeassistant/components/notion/binary_sensor.py
index b8fd96fabc5..a198903b99a 100644
--- a/homeassistant/components/notion/binary_sensor.py
+++ b/homeassistant/components/notion/binary_sensor.py
@@ -77,7 +77,7 @@ class NotionBinarySensor(NotionEntity, BinarySensorEntity):
     @callback
     def _async_update_from_latest_data(self) -> None:
         """Fetch new state data for the sensor."""
-        task = self.coordinator.data["tasks"][self._task_id]
+        task = self.coordinator.data["tasks"][self.task_id]
 
         if "value" in task["status"]:
             self._state = task["status"]["value"]
@@ -87,7 +87,7 @@ class NotionBinarySensor(NotionEntity, BinarySensorEntity):
     @property
     def is_on(self) -> bool:
         """Return whether the sensor is on or off."""
-        task = self.coordinator.data["tasks"][self._task_id]
+        task = self.coordinator.data["tasks"][self.task_id]
 
         if task["task_type"] == SENSOR_BATTERY:
             return self._state == "critical"
diff --git a/homeassistant/components/notion/sensor.py b/homeassistant/components/notion/sensor.py
index 99af00c3b1a..978e0aac46a 100644
--- a/homeassistant/components/notion/sensor.py
+++ b/homeassistant/components/notion/sensor.py
@@ -76,7 +76,7 @@ class NotionSensor(NotionEntity):
     @callback
     def _async_update_from_latest_data(self) -> None:
         """Fetch new state data for the sensor."""
-        task = self.coordinator.data["tasks"][self._task_id]
+        task = self.coordinator.data["tasks"][self.task_id]
 
         if task["task_type"] == SENSOR_TEMPERATURE:
             self._state = round(float(task["status"]["value"]), 1)