diff --git a/dev-ruby/singleton/singleton-0.2.0.ebuild b/dev-ruby/singleton/singleton-0.2.0.ebuild
index b199359bc993c..7d16b1739029a 100644
--- a/dev-ruby/singleton/singleton-0.2.0.ebuild
+++ b/dev-ruby/singleton/singleton-0.2.0.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32"
+USE_RUBY="ruby31 ruby32 ruby33"
 
 RUBY_FAKEGEM_BINWRAP=""
 RUBY_FAKEGEM_EXTRADOC="README.md"