diff --git a/lib/audio.dart b/lib/audio.dart
index da795eff2..dc0d03143 100644
--- a/lib/audio.dart
+++ b/lib/audio.dart
@@ -38,15 +38,15 @@ class Audio {
     return loadedFiles[fileName];
   }
 
-  Future<int> play(String fileName) async {
+  Future<int> play(String fileName, { volume: 1.0 }) async {
     File file = await load(fileName);
-    return await new AudioPlayer().play(file.path, isLocal: true);
+    return await new AudioPlayer().play(file.path, isLocal: true, volume: volume);
   }
 
-  Future<int> loop(String fileName) async {
+  Future<int> loop(String fileName, { volume: 1.0 }) async {
     File file = await load(fileName);
     AudioPlayer player = new AudioPlayer();
-    player.setCompletionHandler(() => player.play(file.path, isLocal: true));
+    player.setCompletionHandler(() => player.play(file.path, isLocal: true, volume: volume));
     return await player.play(file.path, isLocal: true);
   }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 9c006cd14..db4629da5 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -10,7 +10,7 @@ flutter:
 dependencies:
   flutter:
     sdk: flutter
-  audioplayers: ^0.3.0
+  audioplayers: ^0.4.0
   path_provider: ^0.2.1+1
   box2d: ^0.3.0