diff --git a/package.json b/package.json
index 2311e0a0..2c7b854f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "reselect",
-  "version": "4.1.7",
+  "version": "5.0.0-alpha.0",
   "description": "Selectors for Redux.",
   "main": "./dist/cjs/reselect.cjs",
   "module": "./dist/reselect.mjs",