diff --git a/dev-python/black/black-22.3.0.ebuild b/dev-python/black/black-22.3.0.ebuild
index 5af8bdaa4f153..d2cfe32f6a8d1 100644
--- a/dev-python/black/black-22.3.0.ebuild
+++ b/dev-python/black/black-22.3.0.ebuild
@@ -18,7 +18,7 @@ S="${WORKDIR}/${MY_P}"
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="~alpha amd64 ~arm arm64 hppa ~ia64 ppc ppc64 ~riscv sparc x86 ~x64-macos"
+KEYWORDS="~alpha amd64 ~arm arm64 hppa ~ia64 ppc ppc64 ~riscv ~s390 sparc x86 ~x64-macos"
 
 RDEPEND="
 	>=dev-python/click-8.0.0[${PYTHON_USEDEP}]