diff --git a/src/HomeSpan.cpp b/src/HomeSpan.cpp
index 543f770..a9457d0 100644
--- a/src/HomeSpan.cpp
+++ b/src/HomeSpan.cpp
@@ -499,6 +499,7 @@ void Span::checkConnect(){
     mdns_service_txt_item_set("_hap","_tcp","sf","0");           // set Status Flag = 0
 
   mdns_service_txt_item_set("_hap","_tcp","hspn",HOMESPAN_VERSION);           // HomeSpan Version Number (info only - NOT used by HAP)
+  mdns_service_txt_item_set("_hap","_tcp","ard-esp32",ARDUINO_ESP_VERSION);   // Arduino-ESP32 Version Number (info only - NOT used by HAP)
   mdns_service_txt_item_set("_hap","_tcp","sketch",sketchVersion);            // Sketch Version (info only - NOT used by HAP)
   mdns_service_txt_item_set("_hap","_tcp","ota",otaEnabled?"yes":"no");       // OTA Enabled (info only - NOT used by HAP)