diff --git a/dev-ruby/stringio/stringio-3.0.6.ebuild b/dev-ruby/stringio/stringio-3.0.6.ebuild
index 1fbf389181577..0074d5584b015 100644
--- a/dev-ruby/stringio/stringio-3.0.6.ebuild
+++ b/dev-ruby/stringio/stringio-3.0.6.ebuild
@@ -15,7 +15,7 @@ HOMEPAGE="https://github.com/ruby/stringio"
 SRC_URI="https://github.com/ruby/stringio/archive/v${PV}.tar.gz -> ${P}.tar.gz"
 
 LICENSE="BSD-2"
-KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+KEYWORDS="~alpha ~amd64 ~arm arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
 SLOT="0"
 IUSE="test"