diff --git a/package.json b/package.json
index 837f26e..3bb09cb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "loudness",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "license": "MIT",
   "repository": "LinusU/node-loudness",
   "scripts": {