diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index 7bb3563..24f3d03 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -21,6 +21,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  flutter_lints:
 
 flutter:
   uses-material-design: true
\ No newline at end of file
diff --git a/pubspec.yaml b/pubspec.yaml
index 468aef2..70f9071 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,6 @@ environment:
 
 dependencies:
   collection: ^1.18.0
-  universal_io: ^2.2.2
   flutter:
     sdk: flutter