diff --git a/bucket/mill.json b/bucket/mill.json
index 788abea83f..e3c4ddd504 100644
--- a/bucket/mill.json
+++ b/bucket/mill.json
@@ -1,11 +1,11 @@
 {
     "homepage": "http://www.lihaoyi.com/mill/",
     "description": "Build tool aiming for Java and Scala.",
-    "version": "0.5.8",
+    "version": "0.5.9",
     "license": "MIT",
-    "url": "https://github.com/lihaoyi/mill/releases/download/0.5.8/0.5.8-assembly#/mill.bat",
+    "url": "https://github.com/lihaoyi/mill/releases/download/0.5.9/0.5.9-assembly#/mill.bat",
     "bin": "mill.bat",
-    "hash": "574ff5bf636877b6ec36b9498698cb5ac0946ac7a6e054883da1b7a1882e7173",
+    "hash": "3ea26af41b382982c43bce32e6ed49e4f9caa280e3deee3d866b80cb4e9ab645",
     "checkver": {
         "github": "https://github.com/lihaoyi/mill"
     },