diff --git a/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-2.3.2.ebuild b/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-2.3.2.ebuild
index ea4884f3fbb32..0bb2e306a2de4 100644
--- a/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-2.3.2.ebuild
+++ b/dev-ruby/asciidoctor-diagram/asciidoctor-diagram-2.3.2.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby32 ruby33"
+USE_RUBY="ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_RECIPE_TEST="rspec3"