diff --git a/dev-ruby/unf/unf-0.1.4.ebuild b/dev-ruby/unf/unf-0.1.4.ebuild
index 7c813d7c5520a..fd4d3057af20f 100644
--- a/dev-ruby/unf/unf-0.1.4.ebuild
+++ b/dev-ruby/unf/unf-0.1.4.ebuild
@@ -18,7 +18,7 @@ HOMEPAGE="https://github.com/knu/ruby-unf"
 
 LICENSE="BSD-2"
 SLOT="0"
-KEYWORDS="~alpha amd64 ~arm ppc ppc64 x86 ~amd64-linux ~x86-linux ~ppc-macos ~x86-macos ~x86-solaris"
+KEYWORDS="~alpha amd64 ~arm ~arm64 ppc ppc64 x86 ~amd64-linux ~x86-linux ~ppc-macos ~x86-macos ~x86-solaris"
 IUSE="test"
 
 ruby_add_rdepend "dev-ruby/unf_ext"