diff --git a/examples/account_test.go b/examples/account_test.go
index 1387f7b..b414325 100644
--- a/examples/account_test.go
+++ b/examples/account_test.go
@@ -12,7 +12,7 @@ func TestGetAccountBalance(t *testing.T) {
 	if err != nil {
 		fmt.Println("new mock client fail", "err", err)
 	}
-	accountItem := []string{"0x4838B106FCe9647Bdf1E7877BF73cE8B0BAD5f97"}
+	accountItem := []string{"0xD79053a14BC465d9C1434d4A4fAbdeA7b6a2A94b"}
 	symbol := []string{"ETH"}
 	contractAddress := []string{"0x00"}
 	protocolType := []string{""}
diff --git a/examples/mock.go b/examples/mock.go
index d021f92..811ca87 100644
--- a/examples/mock.go
+++ b/examples/mock.go
@@ -9,13 +9,18 @@ import (
 )
 
 var (
-	EtherscanBaseUrl = "https://api.etherscan.io/api?"
-	EtherscanApiKey  = "HZEZGEPJJDA633N421AYW9NE8JFNZZC7JT"
-	EtherscanTimeout = time.Second * 20
+	//EtherscanBaseUrl = "https://api.etherscan.io/api?"
+	//EtherscanApiKey  = "HZEZGEPJJDA633N421AYW9NE8JFNZZC7JT"
+	//EtherscanTimeout = time.Second * 20
 
 	OklinkBaseUrl = "https://www.oklink.com"
 	OklinkApiKey  = "5181d535-b68f-41cf-bbc6-25905e46b6a6"
 	OkTimeout     = time.Second * 20
+
+	// test success
+	EtherscanBaseUrl = "https://api-holesky.etherscan.io/api?"
+	EtherscanApiKey  = "HZEZGEPJJDA633N421AYW9NE8JFNZZC7JT"
+	EtherscanTimeout = time.Second * 20
 )
 
 func NewMockClient() (*oklink.ChainExplorerAdaptor, *etherscan.ChainExplorerAdaptor, error) {