diff --git a/client/src/blockchain-api/wagmi/wagmiClient.ts b/client/src/blockchain-api/wagmi/wagmiClient.ts
index 4cfaa8d..4866761 100644
--- a/client/src/blockchain-api/wagmi/wagmiClient.ts
+++ b/client/src/blockchain-api/wagmi/wagmiClient.ts
@@ -13,7 +13,7 @@ import { publicProvider } from "wagmi/providers/public";
 // import polygonTestIcon from "assets/networks/polygonTest.svg";
 import zkMainIcon from "assets/networks/zkEvmMain.svg";
 import zkTestIcon from "assets/networks/zkEvmTest.svg";
-import { x1 } from "utils/chains";
+import { arbitrumSepolia, x1 } from "utils/chains";
 
 const defaultChains: Chain[] = [
   // { ...polygon, iconUrl: polygonMainIcon, iconBackground: 'transparent' },
@@ -25,6 +25,7 @@ const defaultChains: Chain[] = [
     iconBackground: "transparent",
   },
   x1,
+  arbitrumSepolia,
 ];
 
 const { chains, provider } = configureChains(defaultChains, [publicProvider()]);
diff --git a/client/src/utils/chains.ts b/client/src/utils/chains.ts
index 4fc4d90..07f3283 100644
--- a/client/src/utils/chains.ts
+++ b/client/src/utils/chains.ts
@@ -18,3 +18,39 @@ export const x1 = {
     default: { name: "OKLink", url: "https://www.oklink.com/x1-test" },
   },
 } as const satisfies Chain;
+
+export const arbitrumSepolia = {
+  id: 421_614,
+  name: "Arbitrum Sepolia",
+  network: "arbitrumSepolia",
+  nativeCurrency: {
+    name: "Arbitrum Sepolia Ether",
+    symbol: "ETH",
+    decimals: 18,
+  },
+  rpcUrls: {
+    public: {
+      http: ["https://sepolia-rollup.arbitrum.io/rpc"],
+    },
+    default: {
+      http: ["https://sepolia-rollup.arbitrum.io/rpc"],
+    },
+  },
+  blockExplorers: {
+    etherscan: {
+      name: "Arbiscan",
+      url: "https://sepolia.arbiscan.io",
+    },
+    default: {
+      name: "Arbiscan",
+      url: "https://sepolia.arbiscan.io",
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: "0xca11bde05977b3631167028862be2a173976ca11",
+      blockCreated: 81930,
+    },
+  },
+  testnet: true,
+} as const satisfies Chain;