diff --git a/sdk_container/src/third_party/portage-stable/sys-libs/zlib/zlib-1.3.1-r1.ebuild b/sdk_container/src/third_party/portage-stable/sys-libs/zlib/zlib-1.3.1-r1.ebuild
index 49463fb098..07d24102c3 100644
--- a/sdk_container/src/third_party/portage-stable/sys-libs/zlib/zlib-1.3.1-r1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-libs/zlib/zlib-1.3.1-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2025 Gentoo Authors
+# Copyright 1999-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -23,7 +23,7 @@ SRC_URI="
 
 LICENSE="ZLIB"
 SLOT="0/1" # subslot = SONAME
-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"
+KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~arm64-macos ~x64-macos ~x64-solaris"
 IUSE="minizip static-libs"
 
 RDEPEND="!sys-libs/zlib-ng[compat]"
@@ -88,6 +88,11 @@ multilib_src_configure() {
 			# bug #347167
 			local uname=$("${BROOT}"/usr/share/gnuconfig/config.sub "${CHOST}" | cut -d- -f3)
 
+			# for GNU Hurd
+			if [[ ${uname} == gnu ]] ; then
+				uname=GNU
+			fi
+
 			local myconf=(
 				--shared
 				--prefix="${EPREFIX}/usr"