diff --git a/dev-ruby/mustermann/mustermann-3.0.0.ebuild b/dev-ruby/mustermann/mustermann-3.0.0.ebuild
index 20a8b4e5c86d7..c7be5f34f92b5 100644
--- a/dev-ruby/mustermann/mustermann-3.0.0.ebuild
+++ b/dev-ruby/mustermann/mustermann-3.0.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby27 ruby30 ruby31 ruby32"
+USE_RUBY="ruby31 ruby32 ruby33"
 
 # There are specs but they depend heavily on unpackaged code.
 RUBY_FAKEGEM_RECIPE_TEST="none"