diff --git a/net-mail/mu/mu-1.12.13.ebuild b/net-mail/mu/mu-1.12.13.ebuild
index e5b568318ab76..80260a5577569 100644
--- a/net-mail/mu/mu-1.12.13.ebuild
+++ b/net-mail/mu/mu-1.12.13.ebuild
@@ -14,7 +14,7 @@ SRC_URI="https://github.com/djcb/mu/releases/download/v${PV}/${P}.tar.xz"
 # + variant-lite: Boost-1.0
 LICENSE="BSD Boost-1.0 CC0-1.0 GPL-3+ MIT"
 SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~x86 ~x64-macos"
+KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86 ~x64-macos"
 IUSE="emacs readline test"
 RESTRICT="!test? ( test )"