diff --git a/archivers/upx/Makefile b/archivers/upx/Makefile
index b129870dbcf2..908d7c98b6ea 100644
--- a/archivers/upx/Makefile
+++ b/archivers/upx/Makefile
@@ -1,32 +1,32 @@
 PORTNAME=	upx
-PORTVERSION=	4.2.2
+PORTVERSION=	4.2.3
 MASTER_SITES=	https://github.com/upx/upx/releases/download/v${PORTVERSION}/
 CATEGORIES=	archivers
 DISTVERSIONSUFFIX=	-src
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Ultimate Packer for eXecutables
 WWW=		https://upx.github.io/ \
 		https://github.com/upx/upx
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libucl.so:archivers/ucl
 
 USES=		cmake compiler:c++17-lang cpe tar:xz
 
 CMAKE_ON=	UPX_CONFIG_DISABLE_BZIP2 \
 		UPX_CONFIG_DISABLE_BZIP2 \
 		UPX_CONFIG_DISABLE_GITREV \
 		UPX_CONFIG_DISABLE_SANITIZE \
 		UPX_CONFIG_DISABLE_SELF_PACK_TEST \
 		UPX_CONFIG_DISABLE_THREADS \
 		UPX_CONFIG_DISABLE_WERROR \
 		UPX_CONFIG_DISABLE_WSTRICT
 
 CPE_VENDOR=	upx_project
 
 OPTIONS_DEFINE=	DOCS
 
 .include <bsd.port.mk>
diff --git a/archivers/upx/distinfo b/archivers/upx/distinfo
index 8bc17fa3da39..35e751eb0f12 100644
--- a/archivers/upx/distinfo
+++ b/archivers/upx/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1708448876
-SHA256 (upx-4.2.2-src.tar.xz) = 42ee0455eea610ef7ee732aa1f657b34a351ebcfa64a24c1e2a7aaec74c1e038
-SIZE (upx-4.2.2-src.tar.xz) = 1275320
+TIMESTAMP = 1711860471
+SHA256 (upx-4.2.3-src.tar.xz) = d6357eec6ed4c1b51f40af2316b0958ff1b7fa6f53ef3de12da1d5c96d30e412
+SIZE (upx-4.2.3-src.tar.xz) = 1283824
diff --git a/archivers/upx/files/patch-src-miniacc.h b/archivers/upx/files/patch-src-util-miniacc.h
similarity index 80%
rename from archivers/upx/files/patch-src-miniacc.h
rename to archivers/upx/files/patch-src-util-miniacc.h
index 6709fa756bd8..6fb3f17d0f1b 100644
--- a/archivers/upx/files/patch-src-miniacc.h
+++ b/archivers/upx/files/patch-src-util-miniacc.h
@@ -1,11 +1,11 @@
---- src/miniacc.h.orig	2023-08-08 08:38:12 UTC
-+++ src/miniacc.h
-@@ -2567,7 +2567,7 @@ ACC_COMPILE_TIME_ASSERT_HEADER(ACC_SIZEOF_PTRDIFF_T ==
+--- src/util/miniacc.h.orig	2024-03-27 12:57:30 UTC
++++ src/util/miniacc.h
+@@ -2569,7 +2569,7 @@ ACC_COMPILE_TIME_ASSERT_HEADER(ACC_SIZEOF_PTRDIFF_T ==
  #  define ACC_ABI_LITTLE_ENDIAN     1
  #elif (ACC_ARCH_ALPHA || ACC_ARCH_AMD64 || ACC_ARCH_BLACKFIN || ACC_ARCH_CRIS || ACC_ARCH_I086 || ACC_ARCH_I386 || ACC_ARCH_MSP430 || ACC_ARCH_RISCV)
  #  define ACC_ABI_LITTLE_ENDIAN     1
 -#elif (ACC_ARCH_AVR32 || ACC_ARCH_M68K || ACC_ARCH_S390 || ACC_ARCH_SPARC || ACC_ARCH_SPU)
 +#elif (ACC_ARCH_AVR32 || ACC_ARCH_M68K || ACC_ARCH_S390 || ACC_ARCH_SPARC || ACC_ARCH_SPU || ACC_ARCH_SPARC)
  #  define ACC_ABI_BIG_ENDIAN        1
  #elif 1 && defined(__IAR_SYSTEMS_ICC__) && defined(__LITTLE_ENDIAN__)
  #  if (__LITTLE_ENDIAN__ == 1)