diff --git a/dev-util/aruba/aruba-0.5.4-r1.ebuild b/dev-util/aruba/aruba-0.5.4-r1.ebuild
index 63e86254974ad..d007718a32cfe 100644
--- a/dev-util/aruba/aruba-0.5.4-r1.ebuild
+++ b/dev-util/aruba/aruba-0.5.4-r1.ebuild
@@ -3,7 +3,7 @@
 # $Id$
 
 EAPI=5
-USE_RUBY="ruby20"
+USE_RUBY="ruby20 ruby21"
 
 RUBY_FAKEGEM_TASK_DOC=""
 RUBY_FAKEGEM_RECIPE_TEST="cucumber"