diff --git a/net-libs/libtlsrpt/libtlsrpt-0.5.0.ebuild b/net-libs/libtlsrpt/libtlsrpt-0.5.0.ebuild
index 0a7b1777e6475..90bee80a89be2 100644
--- a/net-libs/libtlsrpt/libtlsrpt-0.5.0.ebuild
+++ b/net-libs/libtlsrpt/libtlsrpt-0.5.0.ebuild
@@ -12,7 +12,7 @@ if [[ ${PV} == 9999 ]]; then
 else
 	MY_P="${PN}-${PV/_/-}"
 	SRC_URI="https://github.com/sys4/${PN}/releases/download/v${PV/_/-}/${MY_P}.tar.gz"
-	KEYWORDS="~alpha amd64 arm arm64 ~hppa ~mips ~ppc ppc64 ~riscv ~sparc x86"
+	KEYWORDS="~alpha amd64 arm arm64 ~hppa ~mips ~ppc ppc64 ~riscv ~s390 ~sparc x86"
 	S="${WORKDIR}/${MY_P}"
 fi