diff --git a/dev-ruby/em-websocket/em-websocket-0.5.1.ebuild b/dev-ruby/em-websocket/em-websocket-0.5.1.ebuild
index ebd3b4c2439b4..5cac22098d1f1 100644
--- a/dev-ruby/em-websocket/em-websocket-0.5.1.ebuild
+++ b/dev-ruby/em-websocket/em-websocket-0.5.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2019 Gentoo Authors
+# Copyright 1999-2020 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -21,7 +21,7 @@ SRC_URI="https://github.com/igrigorik/em-websocket/archive/v${PV}.tar.gz -> ${P}
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="~amd64 ~ppc ~ppc64 ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~x64-solaris ~x86-solaris"
+KEYWORDS="~amd64 ~arm64 ~ppc ~ppc64 ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~x64-solaris ~x86-solaris"
 IUSE=""
 
 ruby_add_rdepend "