diff --git a/sdk_container/src/third_party/coreos-overlay/app-admin/toolbox/toolbox-9999.ebuild b/sdk_container/src/third_party/coreos-overlay/app-admin/toolbox/toolbox-9999.ebuild
index c52d4383fc..361987b958 100644
--- a/sdk_container/src/third_party/coreos-overlay/app-admin/toolbox/toolbox-9999.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/app-admin/toolbox/toolbox-9999.ebuild
@@ -7,10 +7,10 @@ CROS_WORKON_LOCALNAME="toolbox"
 CROS_WORKON_REPO="git://github.com"
 
 if [[ "${PV}" == 9999 ]]; then
-	KEYWORDS="~amd64"
+	KEYWORDS="~amd64 ~arm64"
 else
 	CROS_WORKON_COMMIT="fc4fed00e9d178ae2814493d1e6426a4ce74970c"
-	KEYWORDS="amd64"
+	KEYWORDS="amd64 arm64"
 fi
 
 inherit cros-workon