diff --git a/homeassistant/components/uptimerobot/binary_sensor.py b/homeassistant/components/uptimerobot/binary_sensor.py
index dd7254fb1ca..e1684d64924 100644
--- a/homeassistant/components/uptimerobot/binary_sensor.py
+++ b/homeassistant/components/uptimerobot/binary_sensor.py
@@ -1,5 +1,4 @@
 """A platform that to monitor Uptime Robot monitors."""
-from dataclasses import dataclass
 from datetime import timedelta
 import logging
 
@@ -32,13 +31,6 @@ ATTRIBUTION = "Data provided by Uptime Robot"
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({vol.Required(CONF_API_KEY): cv.string})
 
 
-@dataclass
-class UptimeRobotBinarySensorEntityDescription(BinarySensorEntityDescription):
-    """Entity description for UptimeRobotBinarySensor."""
-
-    target: str = ""
-
-
 async def async_setup_platform(
     hass: HomeAssistant, config, async_add_entities, discovery_info=None
 ):
@@ -46,12 +38,11 @@ async def async_setup_platform(
     uptime_robot_api = UptimeRobot()
     api_key = config[CONF_API_KEY]
 
+    def api_wrapper():
+        return uptime_robot_api.getMonitors(api_key)
+
     async def async_update_data():
         """Fetch data from API UptimeRobot API."""
-
-        def api_wrapper():
-            return uptime_robot_api.getMonitors(api_key)
-
         async with async_timeout.timeout(10):
             monitors = await hass.async_add_executor_job(api_wrapper)
             if not monitors or monitors.get("stat") != "ok":
@@ -76,16 +67,15 @@ async def async_setup_platform(
         [
             UptimeRobotBinarySensor(
                 coordinator,
-                UptimeRobotBinarySensorEntityDescription(
+                BinarySensorEntityDescription(
                     key=monitor["id"],
                     name=monitor["friendly_name"],
-                    target=monitor["url"],
                     device_class=DEVICE_CLASS_CONNECTIVITY,
                 ),
+                target=monitor["url"],
             )
             for monitor in coordinator.data["monitors"]
         ],
-        True,
     )
 
 
@@ -95,28 +85,28 @@ class UptimeRobotBinarySensor(BinarySensorEntity, CoordinatorEntity):
     def __init__(
         self,
         coordinator: DataUpdateCoordinator,
-        description: UptimeRobotBinarySensorEntityDescription,
+        description: BinarySensorEntityDescription,
+        target: str,
     ) -> None:
         """Initialize Uptime Robot the binary sensor."""
         super().__init__(coordinator)
-        self.coordinator = coordinator
         self.entity_description = description
+        self._target = target
         self._attr_extra_state_attributes = {
             ATTR_ATTRIBUTION: ATTRIBUTION,
-            ATTR_TARGET: self.entity_description.target,
+            ATTR_TARGET: self._target,
         }
 
-    async def async_update(self):
-        """Get the latest state of the binary sensor."""
-        if monitor := get_monitor_by_id(
-            self.coordinator.data.get("monitors", []), self.entity_description.key
+    @property
+    def is_on(self) -> bool:
+        """Return True if the entity is on."""
+        if monitor := next(
+            (
+                monitor
+                for monitor in self.coordinator.data.get("monitors", [])
+                if monitor["id"] == self.entity_description.key
+            ),
+            None,
         ):
-            self._attr_is_on = monitor["status"] == 2
-
-
-def get_monitor_by_id(monitors, monitor_id):
-    """Return the monitor object matching the id."""
-    filtered = [monitor for monitor in monitors if monitor["id"] == monitor_id]
-    if len(filtered) == 0:
-        return
-    return filtered[0]
+            return monitor["status"] == 2
+        return False