diff --git a/dev-python/ipywidgets/ipywidgets-7.6.4.ebuild b/dev-python/ipywidgets/ipywidgets-7.6.4.ebuild
index e56d8543d9e18..1ffbbe7f9c02f 100644
--- a/dev-python/ipywidgets/ipywidgets-7.6.4.ebuild
+++ b/dev-python/ipywidgets/ipywidgets-7.6.4.ebuild
@@ -15,7 +15,7 @@ SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
 
 LICENSE="BSD"
 SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux"
 
 RDEPEND="
 	>=dev-python/ipykernel-4.5.1[${PYTHON_USEDEP}]