diff --git a/contracts/earn/DataProvider.sol b/contracts/earn/DataProvider.sol
index 07ec56c..1f942b8 100644
--- a/contracts/earn/DataProvider.sol
+++ b/contracts/earn/DataProvider.sol
@@ -95,7 +95,7 @@ contract DataProvider is IDataProvider {
         assembly {
             chainId := chainid()
         }
-        if (chainId == 10) {
+        if (chainId == 10 || chainId == 5000) {
             for (uint256 i = 0; i < length; i++) {
                 (pendingWooAmounts[i], ) = IMasterChefWooInfo(masterChefWoo).pendingReward(pids[i], user);
                 pendingXWooAmounts[i] = pendingWooAmounts[i];
diff --git a/hardhat.config.ts b/hardhat.config.ts
index 55b7134..729139a 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -120,6 +120,10 @@ const config: HardhatUserConfig = {
       url: "https://goerli.base.org",
       accounts: accounts,
     },
+    mantle: {
+      url: "https://rpc.ankr.com/mantle",
+      accounts: accounts,
+    },
   },
   etherscan: {
     apiKey: {
@@ -148,6 +152,7 @@ const config: HardhatUserConfig = {
       base: process.env.BASESCAN_KEY !== undefined ? process.env.BASESCAN_KEY : "",
       baseGoerli: process.env.BASESCAN_KEY !== undefined ? process.env.BASESCAN_KEY : "",
       goerli: process.env.ETHERSCAN_KEY !== undefined ? process.env.ETHERSCAN_KEY : "",
+      mantle: process.env.MANTLESCAN_KEY !== undefined ? process.env.MANTLESCAN_KEY : "",
     },
     customChains: [
       {
@@ -198,6 +203,14 @@ const config: HardhatUserConfig = {
           browserURL: "https://goerli.basescan.org",
         },
       },
+      {
+        network: "mantle",
+        chainId: 5000,
+        urls: {
+          apiURL: "https://api.mantlescan.xyz/api",
+          browserURL: "https://mantlescan.xyz",
+        },
+      },
     ]
   },
   solidity: {