diff --git a/dev-ruby/rack-cache/rack-cache-1.7.0.ebuild b/dev-ruby/rack-cache/rack-cache-1.7.0.ebuild
index 095e3e316a52b..20c03920d9cad 100644
--- a/dev-ruby/rack-cache/rack-cache-1.7.0.ebuild
+++ b/dev-ruby/rack-cache/rack-cache-1.7.0.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
-USE_RUBY="ruby21 ruby22 ruby23"
+USE_RUBY="ruby21 ruby22 ruby23 ruby24"
 
 # no documentation is generable, it needs hanna, which is broken
 RUBY_FAKEGEM_RECIPE_DOC="none"