diff --git a/dev-ruby/systemu/systemu-2.6.5-r1.ebuild b/dev-ruby/systemu/systemu-2.6.5-r1.ebuild
index 7b42ec669f91e..7674a9caeffa4 100644
--- a/dev-ruby/systemu/systemu-2.6.5-r1.ebuild
+++ b/dev-ruby/systemu/systemu-2.6.5-r1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby26 ruby27 ruby30"
+USE_RUBY="ruby26 ruby27 ruby30 ruby31"
 
 RUBY_FAKEGEM_TASK_DOC=""