diff --git a/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-1.5.4.ebuild b/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-1.5.4.ebuild
index 1f7a20f13ac7c..249471b5792ef 100644
--- a/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-1.5.4.ebuild
+++ b/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-1.5.4.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=5
 
-USE_RUBY="ruby21 ruby22"
+USE_RUBY="ruby21 ruby22 ruby23"
 
 RUBY_FAKEGEM_RECIPE_TEST="rspec3"