diff --git a/hardhat.config.ts b/hardhat.config.ts
index b2be353..801739b 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -42,7 +42,7 @@ const config: HardhatUserConfig = {
       url: process.env.PROVIDER || 'http://127.0.0.1:8545'
     },
     baobab: {
-      url: process.env.PROVIDER || 'https://api.baobab.klaytn.net:8651',
+      url: process.env.PROVIDER || 'https://public-en.kairos.node.kaia.io',
       chainId: 1001,
       ...commonConfig,
       gasPrice: 250_000_000_000
diff --git a/scripts/performance-test.ts b/scripts/performance-test.ts
index ce69cdf..9dea5de 100644
--- a/scripts/performance-test.ts
+++ b/scripts/performance-test.ts
@@ -14,7 +14,7 @@ async function main() {
   const numWords = 1
   const value = ethers.utils.parseEther('1.0')
 
-  const providerUrl = 'https://api.baobab.klaytn.net:8651'
+  const providerUrl = 'https://public-en.kairos.node.kaia.io'
   const provider = new ethers.providers.JsonRpcProvider(providerUrl)
 
   const signer = new ethers.Wallet(