diff --git a/homeassistant/components/mqtt/sensor.py b/homeassistant/components/mqtt/sensor.py
index 51caeb5f6da..777a15b639a 100644
--- a/homeassistant/components/mqtt/sensor.py
+++ b/homeassistant/components/mqtt/sensor.py
@@ -44,6 +44,13 @@ CONF_LAST_RESET_TOPIC = "last_reset_topic"
 CONF_LAST_RESET_VALUE_TEMPLATE = "last_reset_value_template"
 CONF_STATE_CLASS = "state_class"
 
+MQTT_SENSOR_ATTRIBUTES_BLOCKED = frozenset(
+    {
+        sensor.ATTR_LAST_RESET,
+        sensor.ATTR_STATE_CLASS,
+    }
+)
+
 DEFAULT_NAME = "MQTT Sensor"
 DEFAULT_FORCE_UPDATE = False
 PLATFORM_SCHEMA = mqtt.MQTT_RO_PLATFORM_SCHEMA.extend(
@@ -87,6 +94,7 @@ class MqttSensor(MqttEntity, SensorEntity):
     """Representation of a sensor that can be updated using MQTT."""
 
     _attr_last_reset = None
+    _attributes_extra_blocked = MQTT_SENSOR_ATTRIBUTES_BLOCKED
 
     def __init__(self, hass, config, config_entry, discovery_data):
         """Initialize the sensor."""
diff --git a/tests/components/mqtt/test_sensor.py b/tests/components/mqtt/test_sensor.py
index d90737a7b7f..15ca9870077 100644
--- a/tests/components/mqtt/test_sensor.py
+++ b/tests/components/mqtt/test_sensor.py
@@ -6,6 +6,7 @@ from unittest.mock import patch
 
 import pytest
 
+from homeassistant.components.mqtt.sensor import MQTT_SENSOR_ATTRIBUTES_BLOCKED
 import homeassistant.components.sensor as sensor
 from homeassistant.const import EVENT_STATE_CHANGED, STATE_UNAVAILABLE
 import homeassistant.core as ha
@@ -535,7 +536,7 @@ async def test_setting_attribute_via_mqtt_json_message(hass, mqtt_mock):
 async def test_setting_blocked_attribute_via_mqtt_json_message(hass, mqtt_mock):
     """Test the setting of attribute via MQTT with JSON payload."""
     await help_test_setting_blocked_attribute_via_mqtt_json_message(
-        hass, mqtt_mock, sensor.DOMAIN, DEFAULT_CONFIG, None
+        hass, mqtt_mock, sensor.DOMAIN, DEFAULT_CONFIG, MQTT_SENSOR_ATTRIBUTES_BLOCKED
     )