diff --git a/dev-libs/libei/libei-1.1.0.ebuild b/dev-libs/libei/libei-1.1.0.ebuild
index 8dd8aacd003c6..54379208a7ab3 100644
--- a/dev-libs/libei/libei-1.1.0.ebuild
+++ b/dev-libs/libei/libei-1.1.0.ebuild
@@ -14,7 +14,7 @@ SRC_URI+=" https://github.com/nemequ/munit/archive/${MUNIT_COMMIT}.tar.gz -> mun
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
 IUSE="elogind systemd test"
 RESTRICT="!test? ( test )"