diff --git a/dev-python/uri_template/uri_template-1.1.0.ebuild b/dev-python/uri_template/uri_template-1.1.0.ebuild
index ce33e3d3ddeaf..a43f5368a31f6 100644
--- a/dev-python/uri_template/uri_template-1.1.0.ebuild
+++ b/dev-python/uri_template/uri_template-1.1.0.ebuild
@@ -16,7 +16,7 @@ S="${WORKDIR}/${MY_P}"
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~ia64 ~m68k ~ppc ~ppc64 ~riscv ~sparc ~x86"
+KEYWORDS="~amd64 ~arm ~arm64 ~ia64 ~m68k ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
 
 python_test() {
 	"${EPYTHON}" "test.py" || die "Tests fail with ${EPYTHON}."