diff --git a/include/transport/protocol.proto b/include/transport/protocol.proto
index 9a296392cb37f84a6c726e56ee8d3fa378534564..8f3ac42c98a3909e6c95ba234aa22a68835e6ef5 100644
--- a/include/transport/protocol.proto
+++ b/include/transport/protocol.proto
@@ -106,6 +106,7 @@ message Stats {
 	required int32 res = 1;
 	required int32 init_res = 2;
 	required int32 shared = 3;
+	required string id = 4;
 }
 
 message File {