diff --git a/hardhat.config.ts b/hardhat.config.ts
index aa8588a..101cd7b 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -145,19 +145,21 @@ task('deploy', 'Deploy ERC721M')
     '0x0000000000000000000000000000000000000000',
   )
   .addOptionalParam('autoapproveaddress', 'auto approve address')
-  .addParam(
+  .addParam<boolean>(
     'increasesupply',
-    'whether or not to enable increasing supply behavior', 'false',
+    'whether or not to enable increasing supply behavior', false,
+    types.boolean,
   )
-  .addParam('pausable', 'whether to allow transfers to be paused', 'false')
-  .addParam('useoperatorfilterer', 'whether or not to use operator filterer', 'false')
-  .addParam(
+  .addParam<boolean>('pausable', 'whether to allow transfers to be paused', false, types.boolean)
+  .addParam<boolean>('useoperatorfilterer', 'whether or not to use operator filterer', false, types.boolean)
+  .addParam<boolean>(
     'openedition',
     'whether or not a open edition mint (unlimited supply, 999,999,999)',
-    'false',
+    false,
+    types.boolean,
   )
-  .addOptionalParam('useerc721c', 'whether or not to use ERC721C', 'true')
-  .addOptionalParam('useerc2198', 'whether or not to use ERC2198', 'true')
+  .addOptionalParam<boolean>('useerc721c', 'whether or not to use ERC721C', true, types.boolean)
+  .addOptionalParam<boolean>('useerc2198', 'whether or not to use ERC2198', true, types.boolean)
   .addOptionalParam('erc2198royaltyreceiver', 'erc2198 royalty receiver address')
   .addOptionalParam('erc2198royaltyfeenumerator', 'erc2198 royalty fee numerator')
   .setAction(deploy);
diff --git a/scripts/deploy.ts b/scripts/deploy.ts
index e867b37..060282f 100644
--- a/scripts/deploy.ts
+++ b/scripts/deploy.ts
@@ -7,7 +7,7 @@
 import { confirm } from '@inquirer/prompts';
 import { HardhatRuntimeEnvironment } from 'hardhat/types';
 import { ContractDetails } from './common/constants';
-import { estimateGas } from './utils/helper';
+import { checkCodeVersion, estimateGas } from './utils/helper';
 
 export interface IDeployParams {
   name: string;
@@ -33,6 +33,10 @@ export const deploy = async (
   args: IDeployParams,
   hre: HardhatRuntimeEnvironment,
 ) => {
+  if (!await checkCodeVersion()) {
+    return;
+  }
+
   // Compile again in case we have a coverage build (binary too large to deploy)
   await hre.run('compile');
   let contractName: string = ContractDetails.ERC721M.name;
diff --git a/scripts/dev/getContractCodehash.ts b/scripts/dev/getContractCodehash.ts
index 61bc195..7b4a412 100644
--- a/scripts/dev/getContractCodehash.ts
+++ b/scripts/dev/getContractCodehash.ts
@@ -6,7 +6,7 @@ export const getContractCodehash = async (
 ) => {
   const [signer] = await hre.ethers.getSigners();
   const provider = signer.provider;
-  let code = await provider!.getCode(args.contract);
+  const code = await provider!.getCode(args.contract);
   const codehash = hre.ethers.utils.keccak256(code);
   console.log(codehash);
 }
diff --git a/scripts/utils/helper.ts b/scripts/utils/helper.ts
index 96d1c9c..d2d8ed4 100644
--- a/scripts/utils/helper.ts
+++ b/scripts/utils/helper.ts
@@ -1,6 +1,23 @@
+import { confirm } from '@inquirer/prompts';
 import { Deferrable } from 'ethers/lib/utils';
 import { HardhatRuntimeEnvironment } from 'hardhat/types';
 import { TransactionRequest } from "@ethersproject/abstract-provider";
+import * as child from 'child_process';
+
+export const checkCodeVersion = async () => {
+  const localLatestCommit = child.execSync('git rev-parse HEAD').toString().trim();
+  const remoteLatestCommit = child.execSync("git ls-remote https://github.com/magicoss/erc721m.git HEAD | awk '{ print $1}'").toString().trim();
+  console.log('local latest commit:\t', localLatestCommit);
+  console.log('remote latest commit:\t', remoteLatestCommit);
+
+  if (localLatestCommit !== remoteLatestCommit) {
+    console.log("🟡 Warning: you are NOT using the latest version of the code. Please run `git pull` on main branch to update the code.");
+    if (!(await confirm({ message: 'Proceed anyway?', default: false }))) {
+      return false;
+    };
+  }
+  return true;
+}
 
 export const estimateGas = async (hre: HardhatRuntimeEnvironment, tx: Deferrable<TransactionRequest>) => {
   const estimatedGasUnit = await hre.ethers.provider.estimateGas(tx);