diff --git a/package.json b/package.json
index 2835610..5d63e52 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "window",
-  "version": "3.1.6",
+  "version": "4.0.0",
   "description": "Exports a jsdom window object.",
   "main": "src/index.js",
   "engines": {