diff --git a/core/Tron.proto b/core/Tron.proto
index 333dba50636..1f3c4b4293b 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -554,7 +554,7 @@ message SmartContract {
   int64 consume_user_resource_percent = 6;
   string name = 7;
   int64 origin_energy_limit = 8;
-
+  bytes code_hash = 9;
 }
 
 message InternalTransaction {