diff --git a/contracts/tasks/verifier_upgrade.ts b/contracts/tasks/verifier_upgrade.ts
index 06bb8974..94ba46b0 100644
--- a/contracts/tasks/verifier_upgrade.ts
+++ b/contracts/tasks/verifier_upgrade.ts
@@ -5,11 +5,11 @@ import "@nomiclabs/hardhat-waffle";
 import { task } from "hardhat/config";
 import { ContractFactoryName } from "../src/types";
 
-// yarn hardhat upgradeVerifier --rollupVersion 0 --startBatchIndex 0 --multipleVersionRollupVerifier 0x0165878a594ca255338adfa4d48449f69242eb8f --network l1
+// yarn hardhat upgradeVerifier --rollupversion 0 --startbatchindex 0 --multipleversionrollupverifier 0x0165878a594ca255338adfa4d48449f69242eb8f --network l1
 task("upgradeVerifier")
-    .addParam("rollupVersion")
-    .addParam("startBatchIndex")
-    .addParam("multipleVersionRollupVerifier")
+    .addParam("rollupversion")
+    .addParam("startbatchindex")
+    .addParam("multipleversionrollupverifier")
     .setAction(async (taskArgs, hre) => {
         const config = hre.deployConfig
 
@@ -25,9 +25,9 @@ task("upgradeVerifier")
         // add verifier to MultipleVersionRollupVerifier
         const MultipleVersionRollupVerifierFactoryName = ContractFactoryName.MultipleVersionRollupVerifier
         const MultipleVersionRollupVerifierFactory = await hre.ethers.getContractFactory(MultipleVersionRollupVerifierFactoryName)
-        const MultipleVersionRollupVerifier = MultipleVersionRollupVerifierFactory.attach(taskArgs.multipleVersionRollupVerifier)
+        const MultipleVersionRollupVerifier = MultipleVersionRollupVerifierFactory.attach(taskArgs.multipleversionrollupverifier)
 
-        const res = await MultipleVersionRollupVerifier.updateVerifier(taskArgs.rollupVersion, taskArgs.startBatchIndex, contract.address.toLocaleLowerCase())
+        const res = await MultipleVersionRollupVerifier.updateVerifier(taskArgs.rollupversion, taskArgs.startbatchindex, contract.address.toLocaleLowerCase())
 
         const receipt = await res.wait()
         console.log(`receipt status : ${receipt.status}`)