diff --git a/package.json b/package.json
index e8195ddc..a66f0156 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vaadin-upload",
-  "version": "4.0.0-alpha1",
+  "version": "4.0.0-alpha2",
   "description": "Polymer Element for uploading files",
   "main": "vaadin-upload.html",
   "repository": "vaadin/vaadin-upload",
diff --git a/src/vaadin-upload.html b/src/vaadin-upload.html
index a584132f..e7f78017 100644
--- a/src/vaadin-upload.html
+++ b/src/vaadin-upload.html
@@ -123,7 +123,7 @@
         }
 
         static get version() {
-          return '4.0.0-alpha1';
+          return '4.0.0-alpha2';
         }
 
         static get properties() {