diff --git a/dev-ruby/cri/cri-2.15.12.ebuild b/dev-ruby/cri/cri-2.15.12.ebuild
index fa2c64fe60823..bafdb0a85eba0 100644
--- a/dev-ruby/cri/cri-2.15.12.ebuild
+++ b/dev-ruby/cri/cri-2.15.12.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby32 ruby33 ruby34"
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_EXTRADOC="NEWS.md README.md"