diff --git a/dev-cpp/ms-gsl/ms-gsl-3.1.0.ebuild b/dev-cpp/ms-gsl/ms-gsl-3.1.0.ebuild
index 35999713b0328..3e690129c15ac 100644
--- a/dev-cpp/ms-gsl/ms-gsl-3.1.0.ebuild
+++ b/dev-cpp/ms-gsl/ms-gsl-3.1.0.ebuild
@@ -13,7 +13,7 @@ S="${WORKDIR}/GSL-${PV}"
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="amd64 ~arm ~ppc ~ppc64 x86"
+KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 x86"
 IUSE="test"
 RESTRICT="!test? ( test )"