diff --git a/dev-ruby/typeprof/typeprof-0.31.1.ebuild b/dev-ruby/typeprof/typeprof-0.31.1.ebuild
index 5baffd83ee23b..68308ac6dd903 100644
--- a/dev-ruby/typeprof/typeprof-0.31.1.ebuild
+++ b/dev-ruby/typeprof/typeprof-0.31.1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby32 ruby33 ruby34"
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_RECIPE_DOC="none"
 RUBY_FAKEGEM_EXTRADOC="README.md"