diff --git a/bucket/upx.json b/bucket/upx.json
index 5b26f8278f..12f168156d 100644
--- a/bucket/upx.json
+++ b/bucket/upx.json
@@ -1,18 +1,18 @@
 {
-    "version": "4.2.0",
+    "version": "4.2.1",
     "description": "UPX is a free, portable, extendable, high-performance executable packer for several executable formats",
     "homepage": "https://upx.github.io/",
     "license": "GPL-2.0-or-later",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/upx/upx/releases/download/v4.2.0/upx-4.2.0-win64.zip",
-            "hash": "83833b414d17b39f334de28b981f1a6a88252294b9d76005f2a8047f5c1821f1",
-            "extract_dir": "upx-4.2.0-win64"
+            "url": "https://github.com/upx/upx/releases/download/v4.2.1/upx-4.2.1-win64.zip",
+            "hash": "b6e20e35303a390c3b1211f5ed0559def2c34ec5774176bb22afee19b35b2138",
+            "extract_dir": "upx-4.2.1-win64"
         },
         "32bit": {
-            "url": "https://github.com/upx/upx/releases/download/v4.2.0/upx-4.2.0-win32.zip",
-            "hash": "fb1a924136b35e56cd1dbd761dff53fcc9757ccd3210cdbc8ffbd2904dcb66f3",
-            "extract_dir": "upx-4.2.0-win32"
+            "url": "https://github.com/upx/upx/releases/download/v4.2.1/upx-4.2.1-win32.zip",
+            "hash": "475504d9b2ae5fd9ede27919ee3b3fa8869a1398645c1239fc19193022054268",
+            "extract_dir": "upx-4.2.1-win32"
         }
     },
     "bin": "upx.exe",