diff --git a/dev-ruby/amq-protocol/amq-protocol-2.5.0.ebuild b/dev-ruby/amq-protocol/amq-protocol-2.5.0.ebuild
index 8f88c96b4a0a0..464dfcc29170c 100644
--- a/dev-ruby/amq-protocol/amq-protocol-2.5.0.ebuild
+++ b/dev-ruby/amq-protocol/amq-protocol-2.5.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby32 ruby33 ruby34"
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_EXTRADOC="ChangeLog.md README.md"