diff --git a/dev-perl/Module-Build-Tiny/Module-Build-Tiny-0.39.0.ebuild b/dev-perl/Module-Build-Tiny/Module-Build-Tiny-0.39.0.ebuild
index dd8428f8028d2..47147bc60b3a3 100644
--- a/dev-perl/Module-Build-Tiny/Module-Build-Tiny-0.39.0.ebuild
+++ b/dev-perl/Module-Build-Tiny/Module-Build-Tiny-0.39.0.ebuild
@@ -8,7 +8,7 @@ inherit perl-module
 
 DESCRIPTION='A tiny replacement for Module::Build'
 SLOT="0"
-KEYWORDS="alpha amd64 arm hppa ia64 ppc ppc64 sparc x86 ~amd64-fbsd"
+KEYWORDS="alpha amd64 arm hppa ia64 ppc ppc64 s390 sparc x86 ~amd64-fbsd"
 IUSE="test"
 
 RDEPEND="