diff --git a/dev-ruby/heredoc_unindent/heredoc_unindent-1.2.0.ebuild b/dev-ruby/heredoc_unindent/heredoc_unindent-1.2.0.ebuild
index 1b25083d9eee7..f983307273021 100644
--- a/dev-ruby/heredoc_unindent/heredoc_unindent-1.2.0.ebuild
+++ b/dev-ruby/heredoc_unindent/heredoc_unindent-1.2.0.ebuild
@@ -4,7 +4,7 @@
 
 EAPI=5
 
-USE_RUBY="ruby20 ruby21 ruby22"
+USE_RUBY="ruby20 ruby21 ruby22 ruby23"
 
 inherit ruby-fakegem