diff --git a/package.json b/package.json
index ef8c1122..8f6d5cf8 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "openpgp",
   "description": "OpenPGP.js is a Javascript implementation of the OpenPGP protocol. This is defined in RFC 4880.",
-  "version": "1.5.7",
+  "version": "2.0.0-dev",
   "license": "LGPL-3.0+",
   "homepage": "http://openpgpjs.org/",
   "engines": {