diff --git a/main/config_mqttDiscovery.h b/main/config_mqttDiscovery.h
index edd0a90..687af23 100644
--- a/main/config_mqttDiscovery.h
+++ b/main/config_mqttDiscovery.h
@@ -204,6 +204,8 @@ void announceDeviceTrigger(bool use_gateway_info,
 const char* availableHASSClasses[] = {"battery",
                                       "carbon_monoxide",
                                       "carbon_dioxide",
+                                      "pm10",
+                                      "pm25",
                                       "humidity",
                                       "illuminance",
                                       "signal_strength",
@@ -233,6 +235,8 @@ const char* availableHASSUnits[] = {"W",
                                     "kg",
                                     "lb",
                                     "µS/cm",
+                                    "ppm",
+                                    "μg/m³",
                                     "lx",
                                     "%",
                                     "dB",