diff --git a/.github/workflows/portage-stable-packages-list b/.github/workflows/portage-stable-packages-list
index 651762717a..ae0d551d76 100644
--- a/.github/workflows/portage-stable-packages-list
+++ b/.github/workflows/portage-stable-packages-list
@@ -152,7 +152,6 @@ app-misc/editor-wrapper
 app-misc/jq
 app-misc/mime-types
 app-misc/pax-utils
-app-misc/zisofs-tools
 
 app-portage/elt-patches
 app-portage/gentoolkit
diff --git a/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/Manifest b/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/Manifest
deleted file mode 100644
index e7acf1df7a..0000000000
--- a/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/Manifest
+++ /dev/null
@@ -1 +0,0 @@
-DIST zisofs-tools-1.0.8.tar.bz2 52968 BLAKE2B 81224adfcf4309513ceec7c25f72d90e4dfbacc225c756b35f1ae2ce721709abd4f52559596632a121813bae2c14d259e7950e84cbed43a547e77bf3491f8fdb SHA512 2c50bb73428c065e02e95def81950e1f64aff3cec0a4d74ee91ddbf4c15b81a423d8a128a4abc2e11aeb866b9d5f67f55019f7ae884c9e1a8b013ed3133db50d
diff --git a/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/metadata.xml b/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/metadata.xml
deleted file mode 100644
index 85e4ed814f..0000000000
--- a/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/metadata.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
-<pkgmetadata>
-<!-- maintainer-needed -->
-</pkgmetadata>
diff --git a/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/zisofs-tools-1.0.8-r1.ebuild b/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/zisofs-tools-1.0.8-r1.ebuild
deleted file mode 100644
index 91ef7bff25..0000000000
--- a/sdk_container/src/third_party/portage-stable/app-misc/zisofs-tools/zisofs-tools-1.0.8-r1.ebuild
+++ /dev/null
@@ -1,36 +0,0 @@
-# Copyright 1999-2022 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-inherit autotools flag-o-matic
-
-DESCRIPTION="User utilities for zisofs"
-HOMEPAGE="https://www.kernel.org/pub/linux/utils/fs/zisofs/"
-SRC_URI="mirror://gentoo/${P}.tar.bz2"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos"
-IUSE="static"
-
-RDEPEND=">=sys-libs/zlib-1.1.4:="
-DEPEND="${RDEPEND}"
-
-src_prepare() {
-	default
-
-	# Clang 16
-	sed -i -e 's:configure.in:configure.ac:' Makefile || die
-	eautoreconf
-}
-
-src_configure() {
-	use static && append-ldflags -static
-	default
-}
-
-src_install() {
-	emake INSTALLROOT="${D}" install
-	einstalldocs
-}