diff --git a/unary/client/main.go b/unary/client/main.go
index a438921..dd8eea8 100644
--- a/unary/client/main.go
+++ b/unary/client/main.go
@@ -7,6 +7,7 @@ import (
 
 	pb "github.com/jun06t/grpc-sample/unary/proto"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 )
 
 const (
@@ -14,7 +15,10 @@ const (
 )
 
 func main() {
-	conn, err := grpc.Dial(address, grpc.WithInsecure())
+	conn, err := grpc.NewClient(
+		address,
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+	)
 	if err != nil {
 		log.Fatal(err)
 	}