diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-2.10.3-r1.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-2.10.3-r1.ebuild
index bc2c968b0d..4b5648cf64 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-2.10.3-r1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-2.10.3-r1.ebuild
@@ -1,13 +1,13 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
 # Note: Please bump in sync with dev-libs/libxslt
 
-PYTHON_COMPAT=( python3_{8..11} )
+PYTHON_COMPAT=( python3_{9..11} )
 PYTHON_REQ_USE="xml(+)"
-inherit flag-o-matic python-r1 multilib-minimal
+inherit flag-o-matic python-r1 multilib-minimal toolchain-funcs
 
 XSTS_HOME="http://www.w3.org/XML/2004/xml-schema-test-suite"
 XSTS_NAME_1="xmlschema2002-01-16"
@@ -102,6 +102,13 @@ multilib_src_configure() {
 	# Filter seemingly problematic CFLAGS (bug #26320)
 	filter-flags -fprefetch-loop-arrays -funroll-loops
 
+	# ideally we want !tc-ld-is-bfd for best future-proofing, but it needs
+	# https://github.com/gentoo/gentoo/pull/28355
+	# mold needs this too but right now tc-ld-is-mold is also not available
+	if tc-ld-is-lld; then
+		append-ldflags -Wl,--undefined-version
+	fi
+
 	# Notes:
 	# The meaning of the 'debug' USE flag does not apply to the --with-debug
 	# switch (enabling the libxml2 debug module). See bug #100898.
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-9999.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-9999.ebuild
index b8f7fa1688..556f5e7156 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-9999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/libxml2/libxml2-9999.ebuild
@@ -1,13 +1,13 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
 # Note: Please bump in sync with dev-libs/libxslt
 
-PYTHON_COMPAT=( python3_{8..11} )
+PYTHON_COMPAT=( python3_{9..11} )
 PYTHON_REQ_USE="xml(+)"
-inherit flag-o-matic python-r1 multilib-minimal
+inherit flag-o-matic python-r1 multilib-minimal toolchain-funcs
 
 XSTS_HOME="http://www.w3.org/XML/2004/xml-schema-test-suite"
 XSTS_NAME_1="xmlschema2002-01-16"
@@ -100,6 +100,13 @@ multilib_src_configure() {
 	# Filter seemingly problematic CFLAGS (bug #26320)
 	filter-flags -fprefetch-loop-arrays -funroll-loops
 
+	# ideally we want !tc-ld-is-bfd for best future-proofing, but it needs
+	# https://github.com/gentoo/gentoo/pull/28355
+	# mold needs this too but right now tc-ld-is-mold is also not available
+	if tc-ld-is-lld; then
+		append-ldflags -Wl,--undefined-version
+	fi
+
 	# Notes:
 	# The meaning of the 'debug' USE flag does not apply to the --with-debug
 	# switch (enabling the libxml2 debug module). See bug #100898.