diff --git a/srcpkgs/upx/template b/srcpkgs/upx/template
index f2379cbebbe..85278b60d77 100644
--- a/srcpkgs/upx/template
+++ b/srcpkgs/upx/template
@@ -1,6 +1,6 @@
 # Template file for 'upx'
 pkgname=upx
-version=4.1.0
+version=4.2.1
 revision=1
 build_style=cmake
 configure_args="-DCMAKE_BUILD_TYPE=Release"
@@ -12,4 +12,4 @@ license="GPL-2.0-or-later"
 homepage="https://upx.github.io/"
 changelog="https://raw.githubusercontent.com/upx/upx/master/NEWS"
 distfiles="https://github.com/upx/upx/releases/download/v${version}/upx-${version}-src.tar.xz"
-checksum=0582f78b517ea87ba1caa6e8c111474f58edd167e5f01f074d7d9ca2f81d47d0
+checksum=cc562ea7dbd8cec4505edea68736e04030ec5891c1e2a300e3c0d0eac6364479