diff --git a/dev-python/sphinx-prompt/sphinx-prompt-1.5.0.ebuild b/dev-python/sphinx-prompt/sphinx-prompt-1.5.0.ebuild
index b4845899ffc96..31ebe59234ea4 100644
--- a/dev-python/sphinx-prompt/sphinx-prompt-1.5.0.ebuild
+++ b/dev-python/sphinx-prompt/sphinx-prompt-1.5.0.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=8
@@ -12,7 +12,7 @@ SRC_URI="https://github.com/sbrunner/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz"
 
 LICENSE="BSD"
 SLOT="0"
-KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ppc ppc64 ~riscv sparc x86"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ppc ppc64 ~riscv ~s390 sparc x86"
 
 RDEPEND="
 	dev-python/sphinx[${PYTHON_USEDEP}]