diff --git a/dev-ml/async/async-0.15.0.ebuild b/dev-ml/async/async-0.15.0.ebuild
index abc3cd529c73c..d5b3b17e5e677 100644
--- a/dev-ml/async/async-0.15.0.ebuild
+++ b/dev-ml/async/async-0.15.0.ebuild
@@ -11,7 +11,7 @@ SRC_URI="https://github.com/janestreet/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.g
 
 LICENSE="MIT"
 SLOT="0/$(ver_cut 1-2)"
-KEYWORDS="amd64 arm arm64 ~ppc x86"
+KEYWORDS="amd64 arm arm64 ~ppc ~ppc64 x86"
 IUSE="+ocamlopt"
 
 # Need qtest_lib, netkit_sockets