diff --git a/index.js b/index.js
index 151dced..deb697e 100644
--- a/index.js
+++ b/index.js
@@ -65,8 +65,8 @@ app.get("/getBalance", async (request, response) => {
 });
 
 const privateKey = "0x5fa4fe1e676efae441cefb579f9af9fea37752e76a7ea99a873ce76df7a5a8e9";
-const baseTestnetProvider = new ethers.JsonRpcProvider("https://sepolia.base.org");
-const ercContractAddress = "0xf1691a65cde9A7bfcAb09117daD128452E2bA545";
+const baseTestnetProvider = new ethers.JsonRpcProvider("https://sepolia-rollup.arbitrum.io/rpc");
+const ercContractAddress = "0x1562aA47cab3Bbf4689D4cBB352e01d7A954EF37";
 const utilWallet = new ethers.Wallet(privateKey, baseTestnetProvider);
 const erc1155Abi = [
   // Only include the methods you need, for brevity we'll just include balanceOf