diff --git a/dev-perl/Test-SubCalls/Test-SubCalls-1.100.0-r1.ebuild b/dev-perl/Test-SubCalls/Test-SubCalls-1.100.0-r1.ebuild
index 04927ba3bc7f9..a13e3c7656e9a 100644
--- a/dev-perl/Test-SubCalls/Test-SubCalls-1.100.0-r1.ebuild
+++ b/dev-perl/Test-SubCalls/Test-SubCalls-1.100.0-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -10,7 +10,7 @@ inherit perl-module
 DESCRIPTION="Track the number of times subs are called"
 
 SLOT="0"
-KEYWORDS="~alpha amd64 arm arm64 hppa ~loong ~mips ppc ppc64 ~riscv sparc x86 ~amd64-linux ~x86-linux ~ppc-macos"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos"
 
 RDEPEND="
 	virtual/perl-Exporter