diff --git a/common/constants/constants.go.devnet b/common/constants/constants.go.devnet
index bf756ca3ba..2cd660802f 100644
--- a/common/constants/constants.go.devnet
+++ b/common/constants/constants.go.devnet
@@ -77,6 +77,7 @@ var BaseTopUp = big.NewInt(100)
 var BaseRecall = big.NewInt(100)
 var TIPTRC21Fee = big.NewInt(13523400)
 var TIPTRC21FeeTestnet = big.NewInt(225000)
+var BlockNumberGas50x = big.NewInt(11818181)
 var LimitTimeFinality = uint64(30) // limit in 30 block
 
 var IgnoreSignerCheckBlockArray = map[uint64]bool{