diff --git a/src/feeOracle.ts b/src/feeOracle.ts
index e602fa3..f0c29d3 100644
--- a/src/feeOracle.ts
+++ b/src/feeOracle.ts
@@ -121,9 +121,10 @@ export abstract class TornadoFeeOracle implements ITornadoFeeOracle {
    * Estimates gas limit for transaction (or basic gas limit, if no tx data provided)
    * @param {TransactionData} tx Transaction data (object in web3 / ethers format)
    * @param {TxType} type Tornado transaction type: withdrawal by user, withdrawal by relayer, relayer fee check or 'other'
+   * @param {number} bumpPercent Gas bump percent to prioritize transaction
    * @returns {Promise<number>} Gas limit
    */
-  abstract getGasLimit(tx?: TransactionData, type?: TxType): Promise<number>;
+  abstract getGasLimit(tx?: TransactionData, type?: TxType, bumpPercent?: number): Promise<number>;
 
   /**
    * If user withdraw non-native tokens on ETH or Goerli, we need to calculate refund value: