diff --git a/dev-ruby/json/json-2.1.0.ebuild b/dev-ruby/json/json-2.1.0.ebuild
index ef2c8a1174f77..4e6c977d3bac4 100644
--- a/dev-ruby/json/json-2.1.0.ebuild
+++ b/dev-ruby/json/json-2.1.0.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
-USE_RUBY="ruby21 ruby22 ruby23 ruby24"
+USE_RUBY="ruby22 ruby23 ruby24 ruby25"
 
 RUBY_FAKEGEM_RECIPE_DOC="rdoc"
 RUBY_FAKEGEM_EXTRADOC="CHANGES.md README.md"