diff --git a/mingw-w64-upx/PKGBUILD b/mingw-w64-upx/PKGBUILD
index 0997baecc6..e7533df575 100644
--- a/mingw-w64-upx/PKGBUILD
+++ b/mingw-w64-upx/PKGBUILD
@@ -3,7 +3,7 @@
 _realname=upx
 pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
-pkgver=4.2.0
+pkgver=4.2.1
 pkgrel=1
 pkgdesc='Ultimate executable compressor.'
 arch=('any')
@@ -18,7 +18,7 @@ makedepends=(
   "${MINGW_PACKAGE_PREFIX}-ninja"
 )
 source=("https://github.com/${_realname}/${_realname}/releases/download/v${pkgver}/${_realname}-${pkgver}-src.tar.xz")
-sha256sums=('09b89fe127fbcb8222dc519badc8cc4da0b2f9f661f2d699d0b2a79e167161fa')
+sha256sums=('cc562ea7dbd8cec4505edea68736e04030ec5891c1e2a300e3c0d0eac6364479')
 
 prepare() {
   mv "${srcdir}/${_realname}-${pkgver}-src" "${srcdir}/${_realname}-${pkgver}"