diff --git a/dev-libs/ls-qpack/ls-qpack-2.6.1.ebuild b/dev-libs/ls-qpack/ls-qpack-2.6.1.ebuild
index 6c9804eb676d..2c3f88aecad4 100644
--- a/dev-libs/ls-qpack/ls-qpack-2.6.1.ebuild
+++ b/dev-libs/ls-qpack/ls-qpack-2.6.1.ebuild
@@ -14,7 +14,7 @@ SRC_URI="
 
 LICENSE="MIT"
 SLOT="0/2"
-KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv x86"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 x86"
 IUSE="test"
 RESTRICT="!test? ( test )"