diff --git a/dev-python/librt/librt-0.7.4.ebuild b/dev-python/librt/librt-0.7.4.ebuild
index 82cc8f38ad7ca..4c3c2542d53c1 100644
--- a/dev-python/librt/librt-0.7.4.ebuild
+++ b/dev-python/librt/librt-0.7.4.ebuild
@@ -18,7 +18,7 @@ HOMEPAGE="
 
 LICENSE="MIT PSF-2.4"
 SLOT="0"
-KEYWORDS="~amd64 ~arm64 ~loong ~ppc ~ppc64 ~riscv"
+KEYWORDS="~amd64 ~arm64 ~loong ~ppc ~ppc64 ~riscv ~s390"
 
 BDEPEND="
 	test? (