diff --git a/dev-ruby/multi_json/multi_json-1.9.3.ebuild b/dev-ruby/multi_json/multi_json-1.9.3.ebuild
index e021d2e57111f..eeeeaf5426bb7 100644
--- a/dev-ruby/multi_json/multi_json-1.9.3.ebuild
+++ b/dev-ruby/multi_json/multi_json-1.9.3.ebuild
@@ -4,7 +4,7 @@
 
 EAPI=5
 
-USE_RUBY="ruby20 ruby21"
+USE_RUBY="ruby20 ruby21 ruby22"
 
 RUBY_FAKEGEM_RECIPE_TEST="rspec"
 RUBY_FAKEGEM_TASK_DOC="yard"