diff --git a/dev-ml/mirage-clock/mirage-clock-3.1.0.ebuild b/dev-ml/mirage-clock/mirage-clock-3.1.0.ebuild
index 5cbe6137002f2..f2e3d420d7a58 100644
--- a/dev-ml/mirage-clock/mirage-clock-3.1.0.ebuild
+++ b/dev-ml/mirage-clock/mirage-clock-3.1.0.ebuild
@@ -11,7 +11,7 @@ SRC_URI="https://github.com/mirage/mirage-clock/archive/v${PV}.tar.gz -> ${P}.ta
 
 LICENSE="ISC"
 SLOT="0/${PV}"
-KEYWORDS="amd64 arm arm64 ~ppc ppc64 x86"
+KEYWORDS="amd64 arm arm64 ~ppc ppc64 ~riscv x86"
 IUSE="+ocamlopt"
 
 BDEPEND="dev-ml/dune-configurator"