diff --git a/homeassistant/components/amberelectric/binary_sensor.py b/homeassistant/components/amberelectric/binary_sensor.py
index fe6edea18f8..422ff66db59 100644
--- a/homeassistant/components/amberelectric/binary_sensor.py
+++ b/homeassistant/components/amberelectric/binary_sensor.py
@@ -61,7 +61,7 @@ class AmberPriceSpikeBinarySensor(AmberPriceGridSensor):
         return self.coordinator.data["grid"]["price_spike"] == "spike"
 
     @property
-    def device_state_attributes(self) -> Mapping[str, Any] | None:
+    def extra_state_attributes(self) -> Mapping[str, Any] | None:
         """Return additional pieces of information about the price spike."""
 
         spike_status = self.coordinator.data["grid"]["price_spike"]
diff --git a/homeassistant/components/amberelectric/sensor.py b/homeassistant/components/amberelectric/sensor.py
index a1644fb7924..7cee95dcfcf 100644
--- a/homeassistant/components/amberelectric/sensor.py
+++ b/homeassistant/components/amberelectric/sensor.py
@@ -86,7 +86,7 @@ class AmberPriceSensor(AmberSensor):
         return format_cents_to_dollars(interval.per_kwh)
 
     @property
-    def device_state_attributes(self) -> Mapping[str, Any] | None:
+    def extra_state_attributes(self) -> Mapping[str, Any] | None:
         """Return additional pieces of information about the price."""
         interval = self.coordinator.data[self.entity_description.key][self.channel_type]
 
@@ -133,7 +133,7 @@ class AmberForecastSensor(AmberSensor):
         return format_cents_to_dollars(interval.per_kwh)
 
     @property
-    def device_state_attributes(self) -> Mapping[str, Any] | None:
+    def extra_state_attributes(self) -> Mapping[str, Any] | None:
         """Return additional pieces of information about the price."""
         intervals = self.coordinator.data[self.entity_description.key].get(
             self.channel_type
diff --git a/homeassistant/helpers/entity.py b/homeassistant/helpers/entity.py
index 9ee7221ffa6..650ce0701a6 100644
--- a/homeassistant/helpers/entity.py
+++ b/homeassistant/helpers/entity.py
@@ -515,7 +515,15 @@ class Entity(ABC):
             attr.update(self.state_attributes or {})
             extra_state_attributes = self.extra_state_attributes
             # Backwards compatibility for "device_state_attributes" deprecated in 2021.4
-            # Add warning in 2021.6, remove in 2021.10
+            # Warning added in 2021.12, will be removed in 2022.4
+            if self.device_state_attributes is not None:
+                report_issue = self._suggest_report_issue()
+                _LOGGER.warning(
+                    "Entity %s (%s) implements device_state_attributes. Please %s",
+                    self.entity_id,
+                    type(self),
+                    report_issue,
+                )
             if extra_state_attributes is None:
                 extra_state_attributes = self.device_state_attributes
             attr.update(extra_state_attributes or {})
diff --git a/tests/components/amberelectric/test_sensor.py b/tests/components/amberelectric/test_sensor.py
index ccfcd82b3bd..deafcb70fb7 100644
--- a/tests/components/amberelectric/test_sensor.py
+++ b/tests/components/amberelectric/test_sensor.py
@@ -164,7 +164,6 @@ async def test_general_and_feed_in_price_sensor(
 ) -> None:
     """Test the Feed In sensor."""
     assert len(hass.states.async_all()) == 6
-    print(hass.states)
     price = hass.states.get("sensor.mock_title_feed_in_price")
     assert price
     assert price.state == "-0.08"