diff --git a/internal/params/config.go b/internal/params/config.go
index 7cd31bb9df..0258edaf70 100644
--- a/internal/params/config.go
+++ b/internal/params/config.go
@@ -323,6 +323,7 @@ var (
 		big.NewInt(1),                      // LeaderRotationExternalBeaconLeaders
 		big.NewInt(0),                      // FeeCollectEpoch
 		big.NewInt(0),                      // ValidatorCodeFixEpoch
+		big.NewInt(0),                      // BlockGas30M
 	}
 
 	// TestChainConfig ...
@@ -366,6 +367,7 @@ var (
 		big.NewInt(1),        // LeaderRotationExternalBeaconLeaders
 		big.NewInt(0),        // FeeCollectEpoch
 		big.NewInt(0),        // ValidatorCodeFixEpoch
+		big.NewInt(0),        // BlockGas30M
 	}
 
 	// TestRules ...
@@ -522,6 +524,8 @@ type ChainConfig struct {
 	// Contracts can check the (presence of) validator code by calling the following:
 	// extcodesize, extcodecopy and extcodehash.
 	ValidatorCodeFixEpoch *big.Int `json:"validator-code-fix-epoch,omitempty"`
+
+	BlockGas30M *big.Int `json:"block-gas-30m,omitempty"`
 }
 
 // String implements the fmt.Stringer interface.
@@ -737,6 +741,10 @@ func (c *ChainConfig) IsLeaderRotation(epoch *big.Int) bool {
 	return isForked(c.LeaderRotationExternalNonBeaconLeaders, epoch)
 }
 
+func (c *ChainConfig) IsBlockGas30M(epoch *big.Int) bool {
+	return isForked(c.BlockGas30M, epoch)
+}
+
 func (c *ChainConfig) IsLeaderRotationExternalValidatorsAllowed(epoch *big.Int, shardID uint32) bool {
 	if !c.IsLeaderRotation(epoch) {
 		return false
diff --git a/node/worker/worker.go b/node/worker/worker.go
index 5a4234229a..1419477810 100644
--- a/node/worker/worker.go
+++ b/node/worker/worker.go
@@ -308,7 +308,7 @@ func (w *Worker) UpdateCurrent() error {
 	header := w.factory.NewHeader(epoch).With().
 		ParentHash(parent.Hash()).
 		Number(num.Add(num, common.Big1)).
-		GasLimit(core.CalcGasLimit(parent, w.gasFloor, w.gasCeil)).
+		GasLimit(core.CalcGasLimit(parent, w.GasFloor(epoch), w.gasCeil)).
 		Time(big.NewInt(timestamp)).
 		ShardID(w.chain.ShardID()).
 		Header()
@@ -602,3 +602,15 @@ func New(
 
 	return worker
 }
+
+func (w *Worker) GasFloor(epoch *big.Int) uint64 {
+	if w.chain.Config().IsBlockGas30M(epoch) {
+		return 30_000_000
+	}
+
+	return w.gasFloor
+}
+
+func (w *Worker) GasCeil() uint64 {
+	return w.gasCeil
+}