diff --git a/package.json b/package.json
index eba0909..4f2bb7d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-window",
-  "version": "1.3.1",
+  "version": "1.4.0-alpha.0",
   "description":
     "React components for efficiently rendering large, scrollable lists and tabular data",
   "author":