diff --git a/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-02-23-libmspack.md b/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-02-23-libmspack.md
new file mode 100644
index 0000000000..ce0690e374
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/changelog/updates/2022-02-23-libmspack.md
@@ -0,0 +1 @@
+- libmspack ([0.10.1_alpha](https://github.com/kyz/libmspack/blob/v0.10.1alpha/libmspack/ChangeLog))
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/Manifest b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/Manifest
index fa7a18545e..698014b976 100644
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/Manifest
+++ b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/Manifest
@@ -1 +1 @@
-DIST libmspack-0.9.1alpha.tar.gz 494651 BLAKE2B 4543215efbcac9cd2703cd56f2297645463831cc2dfa6b38d87c5f48f39676347bb20739e0e389e021983d910b9be99bfd369fb30d36090f3f72f09532d6bd1d SHA512 4e39c2be8768c5c0b0d0798c9322ff022173f5e05af1636c18541bbc9f58c1ae1af59252d5631340fca601495c5b1e5abed0ad83481387421d2df5efb75cd49a
+DIST libmspack-0.10.1alpha.tar.gz 963274 BLAKE2B 39bcb3b7ea419d6d00850b70c217c802a2095dd4398038e594ae7c01ca12e71508218c1cfca5ae8b102636ab9517b13d55c1e411b31e87d28aa46331cd0127e6 SHA512 a7b5f7caa49190c5021f3e768b92f2e51cc0ce685c9ab6ed6fb36de885c73231b58d47a8a3b5c5aa5c9ac56c25c500eb683d84dbf11f09f97f6cb4fff5adc245
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/files/libmspack-0.9.1_alpha-fix-bigendian.patch b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/files/libmspack-0.9.1_alpha-fix-bigendian.patch
deleted file mode 100644
index c134fa0760..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/files/libmspack-0.9.1_alpha-fix-bigendian.patch
+++ /dev/null
@@ -1,17 +0,0 @@
-https://github.com/kyz/libmspack/commit/c19e707936947b45cf05bc9aaee68517c6c2aca6
-
----
- configure.ac  | 1 +
- 1 files changed, 1 insertions(+)
-
-diff --git a/libmspack/configure.ac b/libmspack/configure.ac
---- a/configure.ac
-+++ b/configure.ac
-@@ -30,6 +30,7 @@ AC_CHECK_HEADERS([inttypes.h])
- # Checks for typedefs, structures, and compiler characteristics.
- AC_C_CONST
- AC_C_INLINE
-+AC_C_BIGENDIAN
- AC_TYPE_MODE_T
- AC_TYPE_OFF_T
- AC_TYPE_SIZE_T
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/libmspack-0.9.1_alpha-r1.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/libmspack-0.10.1_alpha.ebuild
similarity index 85%
rename from sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/libmspack-0.9.1_alpha-r1.ebuild
rename to sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/libmspack-0.10.1_alpha.ebuild
index 8adf2c3990..0cdeca7571 100644
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/libmspack-0.9.1_alpha-r1.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/libmspack-0.10.1_alpha.ebuild
@@ -1,7 +1,7 @@
-# Copyright 1999-2019 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI="7"
+EAPI=7
 
 inherit autotools multilib-minimal
 
@@ -10,7 +10,7 @@ if [[ ${PV} == "9999" ]] ; then
 	inherit git-r3
 	MY_P="${PN}-9999"
 else
-	KEYWORDS="alpha amd64 arm hppa ia64 ppc ppc64 s390 sparc x86 ~x64-solaris"
+	KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ppc ppc64 ~riscv ~s390 sparc x86 ~x64-macos ~x64-solaris"
 	MY_PV="${PV/_alpha/alpha}"
 	MY_P="${PN}-${MY_PV}"
 	SRC_URI="https://www.cabextract.org.uk/libmspack/libmspack-${MY_PV}.tar.gz"
@@ -26,8 +26,6 @@ IUSE="debug doc static-libs"
 DEPEND=""
 RDEPEND=""
 
-PATCHES=( "${FILESDIR}"/${P}-fix-bigendian.patch )
-
 S="${WORKDIR}/${MY_P}"
 
 src_prepare() {
@@ -66,7 +64,7 @@ multilib_src_install_all() {
 	use doc && HTML_DOCS=(doc/*)
 	default_src_install
 	if use doc; then
-		rm "${ED%/}"/usr/share/doc/"${PF}"/html/{Makefile*,Doxyfile*} || die
+		rm "${ED}"/usr/share/doc/"${PF}"/html/{Makefile*,Doxyfile*} || die
 	fi
 
 	find "${ED}" -name '*.la' -delete || die
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/metadata.xml b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/metadata.xml
index 1e5806295c..ea25c82c21 100644
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/metadata.xml
+++ b/sdk_container/src/third_party/coreos-overlay/dev-libs/libmspack/metadata.xml
@@ -1,11 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
 	<maintainer type="person">
 		<email>reavertm@gentoo.org</email>
 		<name>Maciej Mrozowski</name>
 	</maintainer>
-	<use>
-		<flag name="utils">Enables building cabrip, chmextract, msexpand and oabextract</flag>
-	</use>
 </pkgmetadata>