diff --git a/src/abi/mint.js b/src/abi/mint.js
index df266da..aa46e59 100644
--- a/src/abi/mint.js
+++ b/src/abi/mint.js
@@ -2,6 +2,23 @@ import {Deferred} from '../utils/promise.util.js'
 const MINT_CONTRACT_ADDRESS=import.meta.env.VITE_CLAIMWL_ADDRESS
 const RPC=import.meta.env.VITE_RPC_API
 
+const chainCfgs = [{
+  name: 'Immutable zkEVM',
+  type: 'Mainnet',
+  rpc: 'https://rpc.immutable.com',
+  id: 13371,
+  symbol: 'IMX',
+  explorerurl: 'https://explorer.immutable.com'
+},
+{
+  name: 'Immutable zkEVM Testnet',
+  type: 'Testnet',
+  rpc: 'https://rpc.testnet.immutable.com',
+  id: 13473,
+  symbol: 'tIMX',
+  explorerurl: 'https://explorer.testnet.immutable.com'
+}]
+
 const requestChain = async (rpc, method, params) => {
   const data = {
     id: Date.now(),
@@ -122,7 +139,8 @@ export const switchEthereumChain = async (provider, targetChainId) => {
     console.log('error switch chain: ', e)
     if (e.code === 4902 || e.message.indexOf('Unrecognized chain ID') >= 0) {
       try {
-        const data = chainCfg
+        const chainIdNum = parseInt(hexChainId)
+        const data = chainCfgs.find(o => o.id === chainIdNum)
         await provider.request({
           method: 'wallet_addEthereumChain',
           params: [