diff --git a/dev-ruby/fiddle/fiddle-1.1.8.ebuild b/dev-ruby/fiddle/fiddle-1.1.8.ebuild
index b255a6bcee062..212d8a437a0d8 100644
--- a/dev-ruby/fiddle/fiddle-1.1.8.ebuild
+++ b/dev-ruby/fiddle/fiddle-1.1.8.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby32 ruby33 ruby34"
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_BINWRAP=""
 RUBY_FAKEGEM_EXTENSIONS=(ext/fiddle/extconf.rb)