diff --git a/core/constants.go b/core/constants.go
index 44ed62a65..c21942b9b 100644
--- a/core/constants.go
+++ b/core/constants.go
@@ -10,7 +10,7 @@ import (
 
 var EpochLength uint64 = 1200
 var NumberOfStates uint64 = 5
-var ChainId = big.NewInt(0x109B4597)
+var ChainId = big.NewInt(0x5a79c44e)
 var StateLength = EpochLength / NumberOfStates
 var MaxRetries uint = 8
 var NilHash = common.Hash{0x00}