diff --git a/providers/etherscan-provider.js b/providers/etherscan-provider.js
index adfee794f..43dd1aba7 100644
--- a/providers/etherscan-provider.js
+++ b/providers/etherscan-provider.js
@@ -35,13 +35,13 @@ function EtherscanProvider(network, apiKey) {
             baseUrl = 'https://api.etherscan.io';
             break;
         case 'ropsten':
-            baseUrl = 'https://ropsten.etherscan.io';
+            baseUrl = 'https://api-ropsten.etherscan.io';
             break;
         case 'rinkeby':
-            baseUrl = 'https://rinkeby.etherscan.io';
+            baseUrl = 'https://api-rinkeby.etherscan.io';
             break;
         case 'kovan':
-            baseUrl = 'https://kovan.etherscan.io';
+            baseUrl = 'https://api-kovan.etherscan.io';
             break;
         default:
             throw new Error('unsupported network');