diff --git a/dev-ruby/coffee-script/coffee-script-2.4.1.ebuild b/dev-ruby/coffee-script/coffee-script-2.4.1.ebuild
index 4197df14468e5..7db935ed501ce 100644
--- a/dev-ruby/coffee-script/coffee-script-2.4.1.ebuild
+++ b/dev-ruby/coffee-script/coffee-script-2.4.1.ebuild
@@ -15,7 +15,7 @@ HOMEPAGE="https://github.com/rails/ruby-coffee-script https://github.com/rails/c
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="amd64 arm ppc ppc64 x86 ~amd64-linux ~x64-macos"
+KEYWORDS="amd64 arm ~arm64 ppc ppc64 x86 ~amd64-linux ~x64-macos"
 
 IUSE=""