diff --git a/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r1.ebuild b/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r1.ebuild
index c405d609b1205..234c1a49e4367 100644
--- a/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r1.ebuild
+++ b/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r1.ebuild
@@ -11,7 +11,7 @@ DESCRIPTION="Client-side interface to the X11 Protocol"
 
 LICENSE="${LICENSE} MIT"
 SLOT="0"
-KEYWORDS="alpha amd64 arm ~arm64 hppa ia64 ~mips ppc ppc64 sparc x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~sparc-solaris ~x86-solaris"
+KEYWORDS="alpha amd64 arm ~arm64 hppa ia64 ~mips ppc ppc64 s390 sparc x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~sparc-solaris ~x86-solaris"
 IUSE=""
 
 RDEPEND="x11-libs/libXrender
diff --git a/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r2.ebuild b/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r2.ebuild
index c307b6d921d45..998cd12da987f 100644
--- a/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r2.ebuild
+++ b/dev-perl/X11-Protocol/X11-Protocol-0.560.0-r2.ebuild
@@ -12,7 +12,7 @@ DESCRIPTION="Client-side interface to the X11 Protocol"
 
 LICENSE="${LICENSE} MIT"
 SLOT="0"
-KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~sparc-solaris ~x86-solaris"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~s390 ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~sparc-solaris ~x86-solaris"
 IUSE=""
 
 RDEPEND="x11-libs/libXrender