diff --git a/proto/common.proto b/proto/common.proto
index f41b27d..13701b6 100644
--- a/proto/common.proto
+++ b/proto/common.proto
@@ -175,6 +175,7 @@ enum ChainRef {
   CHAIN_ALGORAND__MAINNET = 1155;
   CHAIN_ORDERLY__MAINNET = 1156;
   CHAIN_ABCORE__MAINNET=1157;
+  CHAIN_BSQUARED__MAINNET = 1158;
   // Testnets start with 10_000
   CHAIN_ETHEREUM__MORDEN = 10001;
   CHAIN_ETHEREUM__KOVAN = 10002;