diff --git a/homeassistant/components/bbox/sensor.py b/homeassistant/components/bbox/sensor.py
index d2c06f45875..d86dd0c243b 100644
--- a/homeassistant/components/bbox/sensor.py
+++ b/homeassistant/components/bbox/sensor.py
@@ -14,7 +14,6 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
 )
 from homeassistant.const import (
-    ATTR_ATTRIBUTION,
     CONF_MONITORED_VARIABLES,
     CONF_NAME,
     DATA_RATE_MEGABITS_PER_SECOND,
@@ -117,7 +116,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 class BboxUptimeSensor(SensorEntity):
     """Bbox uptime sensor."""
 
-    _attr_extra_state_attributes = {ATTR_ATTRIBUTION: ATTRIBUTION}
+    _attr_attribution = ATTRIBUTION
     _attr_device_class = DEVICE_CLASS_TIMESTAMP
 
     def __init__(self, bbox_data, name, description: SensorEntityDescription):
@@ -138,7 +137,7 @@ class BboxUptimeSensor(SensorEntity):
 class BboxSensor(SensorEntity):
     """Implementation of a Bbox sensor."""
 
-    _attr_extra_state_attributes = {ATTR_ATTRIBUTION: ATTRIBUTION}
+    _attr_attribution = ATTRIBUTION
 
     def __init__(self, bbox_data, name, description: SensorEntityDescription):
         """Initialize the sensor."""