diff --git a/package.json b/package.json
index 38f1fba..6830338 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "msgpack5",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "A msgpack v5 implementation for node.js and the browser, with extension points",
   "main": "index.js",
   "scripts": {