diff --git a/dev-ruby/net-protocol/net-protocol-0.2.2.ebuild b/dev-ruby/net-protocol/net-protocol-0.2.2.ebuild
index a90714783c3b..4d0d87aa513d 100644
--- a/dev-ruby/net-protocol/net-protocol-0.2.2.ebuild
+++ b/dev-ruby/net-protocol/net-protocol-0.2.2.ebuild
@@ -2,7 +2,8 @@
 # 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"
 
 RUBY_FAKEGEM_BINWRAP=""
 RUBY_FAKEGEM_EXTRADOC="README.md"