diff --git a/dev-ruby/rack-protection/rack-protection-2.2.0.ebuild b/dev-ruby/rack-protection/rack-protection-2.2.0.ebuild
index 263f114e79f37..13db1f3f6e1f9 100644
--- a/dev-ruby/rack-protection/rack-protection-2.2.0.ebuild
+++ b/dev-ruby/rack-protection/rack-protection-2.2.0.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby26 ruby27 ruby30"
+USE_RUBY="ruby26 ruby27 ruby30 ruby31"
 
 # There are no specs in the gem and the source cannot be downloaded separately.
 RUBY_FAKEGEM_RECIPE_TEST="none"