diff --git a/dev-python/betamax/betamax-0.8.1.ebuild b/dev-python/betamax/betamax-0.8.1.ebuild
index 6471ec7d22322..fbaf3adf44661 100644
--- a/dev-python/betamax/betamax-0.8.1.ebuild
+++ b/dev-python/betamax/betamax-0.8.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -12,7 +12,7 @@ SRC_URI="mirror://pypi/${PN::1}/${PN}/${P}.tar.gz"
 
 LICENSE="Apache-2.0"
 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"
 IUSE="test"
 
 RDEPEND="dev-python/requests[${PYTHON_USEDEP}]"