diff --git a/core/taiko_genesis.go b/core/taiko_genesis.go
index fdbc7b3351..586025ccd8 100644
--- a/core/taiko_genesis.go
+++ b/core/taiko_genesis.go
@@ -17,7 +17,7 @@ var (
 
 	InternalDevnetPacayaBlock = new(big.Int).SetUint64(10)
 	PreconfDevnetPacayaBlock  = common.Big0
-	HeklaPacayaBlock          = new(big.Int).SetUint64(999_999_999_999)
+	HeklaPacayaBlock          = new(big.Int).SetUint64(1_299_888)
 	MainnetPacayaBlock        = new(big.Int).SetUint64(999_999_999_999)
 )