diff --git a/sys-process/htop/htop-3.0.3.ebuild b/sys-process/htop/htop-3.0.3.ebuild
index 32795d9586ec7..2dae7a50f93f9 100644
--- a/sys-process/htop/htop-3.0.3.ebuild
+++ b/sys-process/htop/htop-3.0.3.ebuild
@@ -10,7 +10,7 @@ inherit autotools linux-info python-any-r1
 DESCRIPTION="interactive process viewer"
 HOMEPAGE="https://htop.dev/ https://github.com/htop-dev/htop"
 SRC_URI="https://github.com/htop-dev/${PN}/archive/${PV/_}.tar.gz -> ${P}.tar.gz"
-KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
 
 LICENSE="BSD GPL-2"
 SLOT="0"