diff --git a/package.json b/package.json
index 2387a459..35eab90d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-uploadx",
-  "version": "4.0.3",
+  "version": "4.1.0-rc.0",
   "description": "Node.js resumable upload middleware",
   "keywords": [
     "resumable",