diff --git a/package.json b/package.json
index cf0a87862..b7082b8a5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mobx-state-tree",
-  "version": "6.0.0-pre.2",
+  "version": "6.0.0-pre.3",
   "description": "Opinionated, transactional, MobX powered state container",
   "main": "dist/mobx-state-tree.js",
   "umd:main": "dist/mobx-state-tree.umd.js",