diff --git a/web3.js/src/util/cluster.ts b/web3.js/src/util/cluster.ts
index bfc913c479..197d5abd64 100644
--- a/web3.js/src/util/cluster.ts
+++ b/web3.js/src/util/cluster.ts
@@ -1,12 +1,12 @@
 const endpoint = {
   http: {
-    devnet: 'http://devnet.solana.com',
-    testnet: 'http://testnet.solana.com',
+    devnet: 'http://api.devnet.solana.com',
+    testnet: 'http://api.testnet.solana.com',
     'mainnet-beta': 'http://api.mainnet-beta.solana.com',
   },
   https: {
-    devnet: 'https://devnet.solana.com',
-    testnet: 'https://testnet.solana.com',
+    devnet: 'https://api.devnet.solana.com',
+    testnet: 'https://api.testnet.solana.com',
     'mainnet-beta': 'https://api.mainnet-beta.solana.com',
   },
 };