diff --git a/dev-python/pyasynchat/pyasynchat-1.0.4.ebuild b/dev-python/pyasynchat/pyasynchat-1.0.4.ebuild
index 3ba1840d14aa1..066434de9e363 100644
--- a/dev-python/pyasynchat/pyasynchat-1.0.4.ebuild
+++ b/dev-python/pyasynchat/pyasynchat-1.0.4.ebuild
@@ -16,7 +16,7 @@ HOMEPAGE="
 
 LICENSE="PSF-2"
 SLOT="0"
-KEYWORDS="~alpha amd64 arm arm64 ~loong ppc ppc64 ~riscv sparc x86"
+KEYWORDS="~alpha amd64 arm arm64 ~loong ppc ppc64 ~riscv ~s390 sparc x86"
 IUSE="test"
 RESTRICT="!test? ( test )"