diff --git a/dev-ruby/ruby-atk/ruby-atk-4.2.9.ebuild b/dev-ruby/ruby-atk/ruby-atk-4.2.9.ebuild
index 12b1b9da63a6b..6f19c45a7d9c7 100644
--- a/dev-ruby/ruby-atk/ruby-atk-4.2.9.ebuild
+++ b/dev-ruby/ruby-atk/ruby-atk-4.2.9.ebuild
@@ -1,8 +1,9 @@
-# Copyright 1999-2025 Gentoo Authors
+# Copyright 1999-2026 Gentoo Authors
 # 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"
 
 inherit ruby-ng-gnome2