diff --git a/dev-ruby/minitest/minitest-5.27.0.ebuild b/dev-ruby/minitest/minitest-5.27.0.ebuild
index 478a4818f192b..452e856eeb98d 100644
--- a/dev-ruby/minitest/minitest-5.27.0.ebuild
+++ b/dev-ruby/minitest/minitest-5.27.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby32 ruby33 ruby34"
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_DOCDIR="doc"
 RUBY_FAKEGEM_EXTRADOC="History.rdoc README.rdoc"