fix directive sorting
diff --git a/example/runner_pool.dart b/example/runner_pool.dart
index fb014ea..7f7cf30 100644
--- a/example/runner_pool.dart
+++ b/example/runner_pool.dart
@@ -6,8 +6,8 @@
 
 import 'dart:async' show Future;
 
-import 'package:isolate/load_balancer.dart';
 import 'package:isolate/isolate_runner.dart';
+import 'package:isolate/load_balancer.dart';
 
 void main() {
   var N = 44;