diff --git a/src/main/protos/core/Unichain.proto b/src/main/protos/core/Unichain.proto
index 97ad704..866e752 100644
--- a/src/main/protos/core/Unichain.proto
+++ b/src/main/protos/core/Unichain.proto
@@ -797,6 +797,7 @@ message NftTemplate{
   bytes prev = 9;
   bytes next_of_minter = 10;
   bytes prev_of_minter = 11;
+  bytes contract_address = 12;
 }
 
 message NftToken{