diff --git a/protos/dmi/hw_metrics_mgmt_service.proto b/protos/dmi/hw_metrics_mgmt_service.proto
index 2f1a23d..56370fb 100644
--- a/protos/dmi/hw_metrics_mgmt_service.proto
+++ b/protos/dmi/hw_metrics_mgmt_service.proto
@@ -29,6 +29,7 @@
     METRIC_TRANSCEIVER_RX_POWER = 203;
     METRIC_TRANSCEIVER_TX_POWER = 204;
     METRIC_TRANSCEIVER_WAVELENGTH = 205;
+    METRIC_TRANSCEIVER_XGSPON_TX_POWER = 206;
 
     // Disk related metrics
     METRIC_DISK_TEMP = 300;