diff --git a/package.json b/package.json
index 72941b37..c7b6f551 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tus-js-client",
-  "version": "3.1.3",
+  "version": "4.0.0",
   "description": "A pure JavaScript client for the tus resumable upload protocol",
   "main": "lib.es5/node/index.js",
   "module": "lib.esm/node/index.js",