diff --git a/libethashseal/GenesisInfo.cpp b/libethashseal/GenesisInfo.cpp
index ed1400cc816..20f67ef9bff 100644
--- a/libethashseal/GenesisInfo.cpp
+++ b/libethashseal/GenesisInfo.cpp
@@ -120,6 +120,7 @@ R"E(
 		"homsteadForkBlock": "0xffffffffffffffff",
 		"daoHardforkBlock": "0xfffffffffffffff",
 		"EIP150ForkBlock": "0xfffffffffffffff",
+		"EIP158ForkBlock": "0xfffffffffffffff",
 		"maximumExtraDataSize": "0x20",
 		"tieBreakingGas": false,
 		"minGasLimit": "0x1388",
@@ -161,6 +162,7 @@ R"E(
 		"homsteadForkBlock": "0x05",
 		"daoHardforkBlock": "0x08",
 		"EIP150ForkBlock": "0x0a",
+		"EIP158ForkBlock": "0x0e",
 		"maximumExtraDataSize": "0x20",
 		"tieBreakingGas": false,
 		"minGasLimit": "0x1388",
@@ -202,6 +204,7 @@ R"E(
 		"maximumExtraDataSize": "0x20",
 		"daoHardforkBlock": "0x1d4c00",
 		"EIP150ForkBlock": "0x259518",
+		"EIP158ForkBlock": "0x333333",
 		"minGasLimit": "0x1388",
 		"maxGasLimit": "7fffffffffffffff",
 		"tieBreakingGas": false,
@@ -240,8 +243,9 @@ R"E(
 	"params": {
 		"accountStartNonce": "0x00",
 		"maximumExtraDataSize": "0x20",
-		"daoHardforkBlock": "0xfffffff",
+		"daoHardforkBlock": "0xfffffffffffffff",
 		"EIP150ForkBlock": "0x00",
+		"EIP158ForkBlock": "0xfffffffffffffff",
 		"minGasLimit": "0x1388",
 		"maxGasLimit": "7fffffffffffffff",
 		"tieBreakingGas": false,
@@ -282,6 +286,7 @@ R"E(
 		"homsteadForkBlock": "0x118c30",
 		"daoHardforkBlock": "0x1d4c00",
 		"EIP150ForkBlock": "0xfffffffffffffff",
+		"EIP158ForkBlock": "0xfffffffffffffff",
 		"maximumExtraDataSize": "0x20",
 		"tieBreakingGas": false,
 		"minGasLimit": "0x1388",