diff --git a/dev-ruby/commonmarker/commonmarker-0.23.11.ebuild b/dev-ruby/commonmarker/commonmarker-0.23.11.ebuild
index 8efbbeb738e05..afbaffa0ef1d2 100644
--- a/dev-ruby/commonmarker/commonmarker-0.23.11.ebuild
+++ b/dev-ruby/commonmarker/commonmarker-0.23.11.ebuild
@@ -2,7 +2,8 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33 ruby34"
+
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_EXTENSIONS=(ext/commonmarker/extconf.rb)
 RUBY_FAKEGEM_EXTENSION_LIBDIR="lib/commonmarker"