diff --git a/bucket/mill.json b/bucket/mill.json
index ec41568aa3..e91586139a 100644
--- a/bucket/mill.json
+++ b/bucket/mill.json
@@ -10,7 +10,7 @@
         "github": "https://github.com/lihaoyi/mill"
     },
     "autoupdate": {
-        "url": "https://github.com/lihaoyi/mill/releases/download/$version/$version-assembly#/mill.bat"
+        "url": "https://github.com/lihaoyi/mill/releases/download/$matchHead/$version-assembly#/mill.bat"
     },
     "suggest": {
         "JDK": [