diff --git a/server/api_test.go b/server/api_test.go
index 76c98749..01c59cf8 100644
--- a/server/api_test.go
+++ b/server/api_test.go
@@ -42,7 +42,7 @@ func newAPI(s storage.Storage, logger log.Logger, t *testing.T) *apiClient {
 
 	// Dial will retry automatically if the serv.Serve() goroutine
 	// hasn't started yet.
-	conn, err := grpc.Dial(l.Addr().String(), insecure.NewCredentials())
+	conn, err := grpc.Dial(l.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
 	if err != nil {
 		t.Fatal(err)
 	}