diff --git a/cw_ethereum/lib/ethereum_client.dart b/cw_ethereum/lib/ethereum_client.dart
index 9d50fdd5b..1298d54f5 100644
--- a/cw_ethereum/lib/ethereum_client.dart
+++ b/cw_ethereum/lib/ethereum_client.dart
@@ -19,7 +19,8 @@ class EthereumClient extends EVMChainClient {
   Future<List<EVMChainTransactionModel>> fetchTransactions(String address,
       {String? contractAddress}) async {
     try {
-      final response = await httpClient.get(Uri.https("api.etherscan.io", "/api", {
+      final response = await httpClient.get(Uri.https("api.etherscan.io", "/v2/api", {
+        "chainid": "$chainId",
         "module": "account",
         "action": contractAddress != null ? "tokentx" : "txlist",
         if (contractAddress != null) "contractaddress": contractAddress,
@@ -50,7 +51,8 @@ class EthereumClient extends EVMChainClient {
   @override
   Future<List<EVMChainTransactionModel>> fetchInternalTransactions(String address) async {
     try {
-      final response = await httpClient.get(Uri.https("api.etherscan.io", "/api", {
+      final response = await httpClient.get(Uri.https("api.etherscan.io", "/v2/api", {
+        "chainid": "$chainId",
         "module": "account",
         "action": "txlistinternal",
         "address": address,
diff --git a/cw_polygon/lib/polygon_client.dart b/cw_polygon/lib/polygon_client.dart
index cb8331977..7e9e882fa 100644
--- a/cw_polygon/lib/polygon_client.dart
+++ b/cw_polygon/lib/polygon_client.dart
@@ -40,12 +40,13 @@ class PolygonClient extends EVMChainClient {
   Future<List<EVMChainTransactionModel>> fetchTransactions(String address,
       {String? contractAddress}) async {
     try {
-      final response = await httpClient.get(Uri.https("api.polygonscan.com", "/api", {
+      final response = await httpClient.get(Uri.https("api.etherscan.io", "/v2/api", {
+        "chainid": "$chainId",
         "module": "account",
         "action": contractAddress != null ? "tokentx" : "txlist",
         if (contractAddress != null) "contractaddress": contractAddress,
         "address": address,
-        "apikey": secrets.polygonScanApiKey,
+        "apikey": secrets.etherScanApiKey,
       }));
 
       final jsonResponse = json.decode(response.body) as Map<String, dynamic>;
@@ -67,11 +68,12 @@ class PolygonClient extends EVMChainClient {
   @override
   Future<List<EVMChainTransactionModel>> fetchInternalTransactions(String address) async {
     try {
-      final response = await httpClient.get(Uri.https("api.polygonscan.io", "/api", {
+      final response = await httpClient.get(Uri.https("api.etherscan.io", "/v2/api", {
+        "chainid": "$chainId",
         "module": "account",
         "action": "txlistinternal",
         "address": address,
-        "apikey": secrets.polygonScanApiKey,
+        "apikey": secrets.etherScanApiKey,
       }));
 
       final jsonResponse = json.decode(response.body) as Map<String, dynamic>;
diff --git a/lib/view_model/dashboard/home_settings_view_model.dart b/lib/view_model/dashboard/home_settings_view_model.dart
index 7bba04b21..4794746c4 100644
--- a/lib/view_model/dashboard/home_settings_view_model.dart
+++ b/lib/view_model/dashboard/home_settings_view_model.dart
@@ -297,13 +297,14 @@ abstract class HomeSettingsViewModelBase with Store {
     required bool isEthereum,
   }) async {
     final uri = Uri.https(
-      isEthereum ? "api.etherscan.io" : "api.polygonscan.com",
-      "/api",
+       "api.etherscan.io",
+      "/v2/api",
       {
+        "chainid": isEthereum ? "1" : "137",
         "module": "token",
         "action": "tokeninfo",
         "contractaddress": contractAddress,
-        "apikey": isEthereum ? secrets.etherScanApiKey : secrets.polygonScanApiKey,
+        "apikey": secrets.etherScanApiKey,
       },
     );
 
@@ -338,13 +339,14 @@ abstract class HomeSettingsViewModelBase with Store {
     required bool isEthereum,
   }) async {
     final uri = Uri.https(
-      isEthereum ? "api.etherscan.io" : "api.polygonscan.com",
-      "/api",
+      "api.etherscan.io",
+      "/v2/api",
       {
+        "chainid": isEthereum ? "1" : "137",
         "module": "contract",
         "action": "getsourcecode",
         "address": contractAddress,
-        "apikey": isEthereum ? secrets.etherScanApiKey : secrets.polygonScanApiKey,
+        "apikey": secrets.etherScanApiKey,
       },
     );