diff --git a/dev-ruby/thread_order/thread_order-1.1.0.ebuild b/dev-ruby/thread_order/thread_order-1.1.0.ebuild
index eb81fea09750f..4020b8c4e79b5 100644
--- a/dev-ruby/thread_order/thread_order-1.1.0.ebuild
+++ b/dev-ruby/thread_order/thread_order-1.1.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=5
 
-USE_RUBY="ruby20 ruby21 ruby22 ruby23"
+USE_RUBY="ruby21 ruby22 ruby23 ruby24"
 
 RUBY_FAKEGEM_RECIPE_TEST="rspec3"