diff --git a/sdk_container/src/third_party/portage-stable/dev-build/automake/Manifest b/sdk_container/src/third_party/portage-stable/dev-build/automake/Manifest
index 9b545d8211..057ffb5a55 100644
--- a/sdk_container/src/third_party/portage-stable/dev-build/automake/Manifest
+++ b/sdk_container/src/third_party/portage-stable/dev-build/automake/Manifest
@@ -1,5 +1,7 @@
 DIST automake-1.11.6.tar.xz 1092908 BLAKE2B 17254d81d6920c32aa877b6c892025de8e4060b8bcbe50fff841ada513dd462ddde8fc6838b4976098a812f8fda047e7186cb62cea8175df615dde75a9959144 SHA512 6e4cdf69f07734954f770fd4a7211a8c9dc69fe25a7746bd3c1e01d3139c94cab2900399e87371548833e99687e0d2b59c5e746ab2fdfbc7d47f2c1d439137ba
 DIST automake-1.17.tar.xz 1652632 BLAKE2B 53c24c138faf3d2be4e30ababcccd4d157c03e815fc4b7f3e3063b6648cf254dfa63afe6e3285b21309dbf260335c3e67991db3825e7532b158b25ccaead83f5 SHA512 46aba1c9d64a6368b326020803a2999831c1deaf31eaa1c1dfdcfa5138a7f755643294e82a08b6daab3983b31eee725bdb7b9edc4e9a558374c7d1f1b8e854a7
 DIST automake-1.17.tar.xz.sig 833 BLAKE2B 4564c7189360c61bde7e16a7c3a52b86084fb16b7f4625969fc588a6aa0da687c7b27acf7247822ec0e09e59336acf0ef69784032f255190a070081f6d9da5cc SHA512 180dde452ec097a9267c334044a9ec16bb65cc6ccbc000b7eca0af81ed7ece6f4ce6f6c2be8a2cabca9d48fd46085c81f0ee5d020967104bc25f37f52927829a
+DIST automake-1.18.1.tar.xz 1652392 BLAKE2B 4461062a4d596dd87caec7d388449f5f8fe7a4faede8fd0d77d1fb3bb5d23caabb3b715fbb9f29f33326bec527f3d8da6251d9282d4007cef9af146d28fe96cf SHA512 8baa16831416a953a743f4e3c0f55cea5ebefe0f5a7a0e390581981d4461d02dc9038415124e974b2ec390c40daaa241802cd7d42c6fafb793f87cf355db2a61
+DIST automake-1.18.1.tar.xz.sig 488 BLAKE2B c8efc6847f83d3c1565783ce9d1c22924ca5e409894f7d9f28b2b492b3c2cb6e937fa85f6c36a67fd484fffd0b89cdae0a09239ab71e6da8d01015528a78c9ed SHA512 5a1f0e89a8f3826c766aa98617765f4a576dc278abb7a0a4c0fa04d27d15bf670b79853642914db58731eb4dc737f0b9ad65ba9a07b7bb227e763e90e2e54349
 DIST automake-1.18.tar.xz 1652364 BLAKE2B 45456d6d0fdcd1222c79980ede1df16dfbf18fa4d4698289dbef7c9e24ae8877881678974c5defcce0a9f46b72882b4603e457e8142722174ccf0e495f941550 SHA512 3488d9188a9e11a3e7f911f429ef49d2d92c5ea42262e3e288e1d4de39217facd5a7b7c7ccac06e6fd78a661985af1fe5638353575ebadffb36fc22553e5f782
 DIST automake-1.18.tar.xz.sig 488 BLAKE2B 5a0e9784f536262ab1015e444a67f827e123da7122730e3c4d8c474de544473b731f876a5e743df15b97571990be7509d9007ea8a1ddf00af9cf1747b528016e SHA512 0c01e85ce08a88809d0205de1250836b2a81bb1c16abb395937f737a1bd37fe8d5612c19dbed7d1afd02ed8a8a321356601e4ae8d32b0859dc50fc3617c33f0c
diff --git a/sdk_container/src/third_party/portage-stable/dev-build/automake/automake-1.18.1.ebuild b/sdk_container/src/third_party/portage-stable/dev-build/automake/automake-1.18.1.ebuild
new file mode 100644
index 0000000000..a126027842
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-build/automake/automake-1.18.1.ebuild
@@ -0,0 +1,148 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Bumping notes:
+# * Remember to modify LAST_KNOWN_AUTOMAKE_VER 'upstream' in dev-build/automake-wrapper
+# on new automake (major) releases, as well as the dependency in RDEPEND below too.
+# * Update _WANT_AUTOMAKE and _automake_atom case statement in autotools.eclass.
+
+PYTHON_COMPAT=( python3_{11..14} )
+
+inherit python-any-r1 verify-sig
+
+MANGLED_SLOT=${PV:0:4}
+
+if [[ ${PV} == 9999 ]] ; then
+	EGIT_MIN_CLONE_TYPE=single
+	EGIT_REPO_URI="https://git.savannah.gnu.org/r/${PN}.git"
+	inherit git-r3
+else
+	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/karlberry.asc
+	if [[ $(ver_cut 3) -ge 90 ]] ; then
+		MANGLED_SLOT=$(ver_cut 1).$(($(ver_cut 2) + 1))
+		SRC_URI="
+			https://alpha.gnu.org/pub/gnu/${PN}/${P}.tar.xz
+			verify-sig? (
+				https://alpha.gnu.org/pub/gnu/${PN}/${P}.tar.xz.sig
+			)
+		"
+	else
+		SRC_URI="
+			mirror://gnu/${PN}/${P}.tar.xz
+			verify-sig? (
+				mirror://gnu/${PN}/${P}.tar.xz.sig
+			)
+		"
+		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+	fi
+fi
+
+DESCRIPTION="Used to generate Makefile.in from Makefile.am"
+HOMEPAGE="https://www.gnu.org/software/automake/"
+
+LICENSE="GPL-2+ FSFAP"
+# Use Gentoo versioning for slotting.
+SLOT="${MANGLED_SLOT}"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	>=dev-lang/perl-5.6
+	>=dev-build/automake-wrapper-20250528
+	>=dev-build/autoconf-2.69:*
+	sys-devel/gnuconfig
+"
+BDEPEND="
+	app-alternatives/gzip
+	sys-apps/help2man
+	dev-build/autoconf-wrapper
+	dev-build/autoconf
+	test? (
+		${PYTHON_DEPS}
+		dev-util/dejagnu
+		sys-devel/bison
+		sys-devel/flex
+	)
+	verify-sig? ( sec-keys/openpgp-keys-karlberry )
+"
+
+pkg_setup() {
+	use test && python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	default
+
+	export WANT_AUTOCONF=2.5
+	# Don't try wrapping the autotools - this thing runs as it tends
+	# to be a bit esoteric, and the script does `set -e` itself.
+	./bootstrap || die
+	sed -i -e "/APIVERSION=/s:=.*:=${SLOT}:" configure || die
+
+	# bug #628912
+	if ! has_version -b sys-apps/texinfo ; then
+		touch doc/{stamp-vti,version.texi,automake.info} || die
+	fi
+}
+
+src_configure() {
+	# Also used in install.
+	infopath="${EPREFIX}/usr/share/automake-${PV}/info"
+	econf --infodir="${infopath}"
+}
+
+src_test() {
+	# Fails with byacc/flex
+	emake YACC="bison -y" LEX="flex" check
+}
+
+src_install() {
+	default
+
+	rm "${ED}"/usr/share/aclocal/README || die
+	rmdir "${ED}"/usr/share/aclocal || die
+	rm \
+		"${ED}"/usr/bin/{aclocal,automake} \
+		"${ED}"/usr/share/man/man1/{aclocal,automake}.1 || die
+
+	# remove all config.guess and config.sub files replacing them
+	# w/a symlink to a specific gnuconfig version
+	local x
+	for x in guess sub ; do
+		dosym ../gnuconfig/config.${x} \
+			/usr/share/${PN}-${SLOT}/config.${x}
+	done
+
+	# Avoid QA message about pre-compressed file in docs
+	local tarfile="${ED}/usr/share/doc/${PF}/amhello-1.0.tar.gz"
+	if [[ -f "${tarfile}" ]] ; then
+		gunzip "${tarfile}" || die
+	fi
+
+	pushd "${D}/${infopath}" >/dev/null || die
+	for f in *.info*; do
+		# Install convenience aliases for versioned Automake pages.
+		ln -s "$f" "${f/./-${PV}.}" || die
+	done
+	popd >/dev/null || die
+
+	if [[ ${PV} == 9999 ]]; then
+		local major="89"
+		local minor="999"
+	else
+		local major="$(ver_cut 1)"
+		if [[ $(ver_cut 3) -ge 90 ]] ; then
+			local minor=$(($(ver_cut 2) + 1))
+		else
+			local minor="$(ver_cut 2)"
+		fi
+	fi
+	local idx="$((99999-(major*1000+minor)))"
+	newenvd - "06automake${idx}" <<-EOF
+	INFOPATH="${infopath}"
+	EOF
+
+	docompress "${infopath}"
+}