diff --git a/package-lock.json b/package-lock.json
index 570db53..9cc6544 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "cookie-store",
-  "version": "3.0.0",
+  "version": "4.0.0-next.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 0f871d0..ce7f10b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "cookie-store",
   "description": "A polyfill for the Cookie Store API",
-  "version": "3.0.0",
+  "version": "4.0.0-next.0",
   "author": "Mark Kennedy <mark@heyimmark.com>",
   "license": "MIT",
   "homepage": "https://github.com/markcellus/cookie-store",