diff --git a/inc/saiport.h b/inc/saiport.h
index a200e757..97549e9c 100644
--- a/inc/saiport.h
+++ b/inc/saiport.h
@@ -3481,6 +3481,14 @@ typedef enum _sai_port_attr_t
      */
     SAI_PORT_ATTR_APSU_ISL_READY,
 
+   /**
+    * @brief Query list of supported port loopback modes for the port
+    *
+    * @type sai_s32_list_t sai_port_loopback_mode_t
+    * @flags READ_ONLY
+    */
+    SAI_PORT_ATTR_SUPPORTED_LOOPBACK_MODE,
+
     /**
      * @brief End of attributes
      */