diff --git a/lib/services/converter.dart b/lib/services/converter.dart
index cdd61d2..574ba62 100644
--- a/lib/services/converter.dart
+++ b/lib/services/converter.dart
@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:path_provider/path_provider.dart';