diff --git a/dev-ruby/atomic/atomic-1.1.99.ebuild b/dev-ruby/atomic/atomic-1.1.99.ebuild
index 3a434b4592cd0..7efdf341a552e 100644
--- a/dev-ruby/atomic/atomic-1.1.99.ebuild
+++ b/dev-ruby/atomic/atomic-1.1.99.ebuild
@@ -14,7 +14,7 @@ HOMEPAGE="https://github.com/headius/ruby-atomic"
 
 LICENSE="Apache-2.0"
 SLOT="0"
-KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ppc ~ppc64 ~x86"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~x86"
 IUSE=""
 
 all_ruby_prepare() {