diff --git a/dev-ruby/async/async-2.23.1.ebuild b/dev-ruby/async/async-2.23.1.ebuild
index 181b87b4cae68..65d96798c0c10 100644
--- a/dev-ruby/async/async-2.23.1.ebuild
+++ b/dev-ruby/async/async-2.23.1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_RECIPE_TEST="sus"
 RUBY_FAKEGEM_EXTRADOC="readme.md"