diff --git a/package.json b/package.json
index 7cee9083b..ca6c7f3c8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/util",
-  "version": "0.5.8",
+  "version": "0.5.9",
   "description": "A collection of useful utilities for @polkadot",
   "main": "index.js",
   "keywords": [