diff --git a/interfaces.go b/interfaces.go
index c4948191d1..59ee47e010 100644
--- a/interfaces.go
+++ b/interfaces.go
@@ -199,6 +199,12 @@ type GasPricer interface {
 	SuggestGasPrice(ctx context.Context) (*big.Int, error)
 }
 
+// GasPricer1559 provides access to the EIP-1559 gas price oracle.
+type GasPricer1559 interface {
+	SuggestGasTipCap(ctx context.Context) (*big.Int, error)
+	FeeHistory(ctx context.Context, blockCount uint64, lastBlock *big.Int, rewardPercentiles []float64) (*FeeHistory, error)
+}
+
 // FeeHistory provides recent fee market data that consumers can use to determine
 // a reasonable maxPriorityFeePerGas value.
 type FeeHistory struct {
@@ -239,3 +245,13 @@ type GasEstimator interface {
 type PendingStateEventer interface {
 	SubscribePendingTransactions(ctx context.Context, ch chan<- *types.Transaction) (Subscription, error)
 }
+
+// BlockNumberReader provides access to the current block number.
+type BlockNumberReader interface {
+	BlockNumber(ctx context.Context) (uint64, error)
+}
+
+// ChainIDReader provides access to the chain ID.
+type ChainIDReader interface {
+	ChainID(ctx context.Context) (*big.Int, error)
+}