diff --git a/package.json b/package.json
index 1b6239a2f..a126df181 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "phat",
-    "version": "0.3.0-beta.1",
+    "version": "0.4.0-beta.1",
     "description": "Pathogen Host Analysis Tool",
     "main": "main.js",
     "scripts": {