diff --git a/params/config.go b/params/config.go
index 577337c965..22041b76e6 100644
--- a/params/config.go
+++ b/params/config.go
@@ -38,6 +38,7 @@ const (
 	BaseGoerliChainID       = 84531
 	baseSepoliaChainID      = 84532
 	baseGoerliDevnetChainID = 11763071
+	pgnSepoliaChainID       = 58008
 	devnetChainID           = 997
 	chaosnetChainID         = 888
 )
diff --git a/params/superchain.go b/params/superchain.go
index 007502c6ce..3928153fbe 100644
--- a/params/superchain.go
+++ b/params/superchain.go
@@ -110,6 +110,9 @@ func LoadOPStackChainConfig(chainID uint64) (*ChainConfig, error) {
 		out.Optimism.EIP1559Elasticity = 10
 	case baseGoerliDevnetChainID:
 		out.RegolithTime = &baseGoerliDevnetRegolithTime
+	case pgnSepoliaChainID:
+		out.Optimism.EIP1559Elasticity = 2
+		out.Optimism.EIP1559Denominator = 8
 	case devnetChainID:
 		out.RegolithTime = &devnetRegolithTime
 		out.Optimism.EIP1559Elasticity = 10