diff --git a/dev-perl/List-UtilsBy/List-UtilsBy-0.100.0.ebuild b/dev-perl/List-UtilsBy/List-UtilsBy-0.100.0.ebuild
index c31930385726a..d6cf2a6a1f2d0 100644
--- a/dev-perl/List-UtilsBy/List-UtilsBy-0.100.0.ebuild
+++ b/dev-perl/List-UtilsBy/List-UtilsBy-0.100.0.ebuild
@@ -10,7 +10,7 @@ inherit perl-module
 DESCRIPTION="Higher-order list utility functions"
 
 SLOT="0"
-KEYWORDS="~alpha amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd"
+KEYWORDS="~alpha amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~s390 ~sparc ~x86 ~amd64-fbsd"
 IUSE="test"
 
 DEPEND="