diff --git a/package.json b/package.json
index 90242a2..1cee2f6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "redis-semaphore",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "Distributed mutex and semaphore based on Redis",
   "main": "lib/index.js",
   "module": "es/index.js",