diff --git a/dev-ruby/rack-cache/rack-cache-1.6.1.ebuild b/dev-ruby/rack-cache/rack-cache-1.6.1.ebuild
index 120d56e416d74..1ab036d1d55bd 100644
--- a/dev-ruby/rack-cache/rack-cache-1.6.1.ebuild
+++ b/dev-ruby/rack-cache/rack-cache-1.6.1.ebuild
@@ -3,7 +3,7 @@
 # $Id$
 
 EAPI=5
-USE_RUBY="ruby20 ruby21 ruby22"
+USE_RUBY="ruby20 ruby21 ruby22 ruby23"
 
 # no documentation is generable, it needs hanna, which is broken
 RUBY_FAKEGEM_RECIPE_DOC="none"