diff --git a/dev-ruby/websocket-extensions/websocket-extensions-0.1.5-r2.ebuild b/dev-ruby/websocket-extensions/websocket-extensions-0.1.5-r2.ebuild
index 8754d315c927b..a6ad99abad0ab 100644
--- a/dev-ruby/websocket-extensions/websocket-extensions-0.1.5-r2.ebuild
+++ b/dev-ruby/websocket-extensions/websocket-extensions-0.1.5-r2.ebuild
@@ -19,7 +19,7 @@ RUBY_S="${PN}-ruby-${PV}"
 
 LICENSE="Apache-2.0"
 SLOT="0"
-KEYWORDS="~amd64 ~arm ~ppc ~ppc64 ~riscv ~x86"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~x86"
 IUSE=""
 
 PATCHES=( "${FILESDIR}"/${P}-rspec-mocks.patch )