diff --git a/app-arch/arj/Manifest b/app-arch/arj/Manifest
index a6bc1e5fef1a3..1a71bb421aaf8 100644
--- a/app-arch/arj/Manifest
+++ b/app-arch/arj/Manifest
@@ -1,2 +1,3 @@
 DIST arj_3.10.22-15.debian.tar.xz 16756 BLAKE2B f9bf45f103cf3f76867006bdbd61f6c5e04d75d9543e99e01304b285b8858034c60f38ea76bc8cdc502b44a8515fb7a04fd9d2f3d07f9ea19e1c5d3a4d448eff SHA512 66e1bc3188afc24573fe98374f9b0cf939d0d3c7a1b356e6367ef544fb0e64721fa686fd1e791f58508576f0f50994878347bcb054f48ebe240cc9ab97e00688
+DIST arj_3.10.22-28.debian.tar.xz 24380 BLAKE2B c188e9f7f37067fdba70ffd6a8066c49c616d9bfc5d1d6fbe53fe86655cb3106fff2b459d34d676c6261071e976be9f6fd87f608937156bd94de207db3fc1910 SHA512 d92be2fe407ced5cd21d7144c8b97d19a5bdfa2391579228d817111a7eef455a847958ae49444aa275d87f043af3133f9a7330309bbdd5df1cf923b0f439d271
 DIST arj_3.10.22.orig.tar.gz 431467 BLAKE2B e40409b9f88a1a7e56de4200b464c3dc420659fa3991bf904ca86bbdb428fc8d17f095b9eabf3170712458ef2136e96545810201cc6755c15e45d4ae9a5e3a03 SHA512 4730dfdbab4f8095396c337578ed69bdaae52955ad468db50b52af8ad2846ecd6cfc05eb3ac0d03838c1c32ea60126f14a22b93e8181c06b9546456f3937ff76
diff --git a/app-arch/arj/arj-3.10.22_p28.ebuild b/app-arch/arj/arj-3.10.22_p28.ebuild
new file mode 100644
index 0000000000000..8181c162814c2
--- /dev/null
+++ b/app-arch/arj/arj-3.10.22_p28.ebuild
@@ -0,0 +1,92 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools flag-o-matic toolchain-funcs
+
+MY_PV="${PV%%_p*}"
+PATCH_LEVEL="${PV##*_p}"
+
+DESCRIPTION="Utility for opening arj archives"
+HOMEPAGE="https://arj.sourceforge.net/"
+SRC_URI="
+	mirror://debian/pool/main/a/arj/arj_${MY_PV}.orig.tar.gz
+	mirror://debian/pool/main/a/arj/arj_${MY_PV}-${PATCH_LEVEL}.debian.tar.xz"
+S="${WORKDIR}/${PN}-${MY_PV}"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos"
+
+PATCHES=(
+	# get order of patches from series file. otherwise the order is wrong :/
+	"${WORKDIR}"/debian/patches/001_arches_align.patch
+	"${WORKDIR}"/debian/patches/002_no_remove_static_const.patch
+	"${WORKDIR}"/debian/patches/003_64_bit_clean.patch
+	"${WORKDIR}"/debian/patches/004_parallel_build.patch
+	"${WORKDIR}"/debian/patches/005_use_system_strnlen.patch
+	"${WORKDIR}"/debian/patches/006_use_safe_strcpy.patch
+	"${WORKDIR}"/debian/patches/hurd_no_fcntl_getlk.patch
+	"${WORKDIR}"/debian/patches/security_format.patch
+	"${WORKDIR}"/debian/patches/doc_refer_robert_k_jung.patch
+	"${WORKDIR}"/debian/patches/gnu_build_fix.patch
+	"${WORKDIR}"/debian/patches/gnu_build_flags.patch
+	"${WORKDIR}"/debian/patches/gnu_build_strip.patch
+	"${WORKDIR}"/debian/patches/gnu_build_pie.patch
+	"${WORKDIR}"/debian/patches/self_integrity_64bit.patch
+	"${WORKDIR}"/debian/patches/security-afl.patch
+	"${WORKDIR}"/debian/patches/security-traversal-dir.patch
+	"${WORKDIR}"/debian/patches/security-traversal-symlink.patch
+	"${WORKDIR}"/debian/patches/out-of-bounds-read.patch
+	"${WORKDIR}"/debian/patches/remove_build_date.patch
+	"${WORKDIR}"/debian/patches/reproducible_help_archive.patch
+	"${WORKDIR}"/debian/patches/gnu_build_cross.patch
+	"${WORKDIR}"/debian/patches/fix-time_t-usage.patch
+	"${WORKDIR}"/debian/patches/gnu_build_fix_autoreconf.patch
+	"${WORKDIR}"/debian/patches/fix-implicit-func.patch
+	"${FILESDIR}"/arj-3.10.22-implicit-declarations.patch
+	"${FILESDIR}"/arj-3.10.22-darwin.patch
+)
+
+DOCS=( doc/compile.txt doc/debug.txt doc/glossary.txt doc/rev_hist.txt doc/xlation.txt )
+
+src_prepare() {
+	default
+
+	cd gnu || die 'failed to change to the "gnu" directory'
+	echo -n "" > stripgcc.lnk || die "failed to disable stripgcc.lnk"
+
+	eautoreconf
+}
+
+src_configure() {
+	# Needed for keeping intergrity_identifier around so that postproc can find it later
+	# GCC defaults to enabling it, Clang doesn't.
+	# bug #509700
+	append-cflags -fkeep-static-consts
+
+	# Debian patches assume this is set. Can be updated with "date +%s"
+	export SOURCE_DATE_EPOCH="1737318540"
+
+	tc-export CC # Uses autoconf but not automake.
+	export CC_FOR_BUILD="$(tc-getBUILD_CC)"
+
+	if tc-is-cross-compiler; then
+		export CFLAGS_FOR_BUILD="${BUILD_CFLAGS}"
+	else
+		export CFLAGS_FOR_BUILD="${CFLAGS}"
+	fi
+
+	cd gnu || die 'failed to change to the "gnu" directory'
+	econf
+}
+
+src_test() {
+	# debian includes a test script. why not use it?
+	local -x AUTOPKGTEST_TMP="${T}/debian-test"
+
+	local -x PATH="${S}/linux-gnu/en/rs/arj/:${PATH}"
+
+	"${WORKDIR}"/debian/tests/test-command || die
+}