diff --git a/dev-ruby/hashdiff/hashdiff-1.1.0.ebuild b/dev-ruby/hashdiff/hashdiff-1.1.0.ebuild
index 6bfae08f49370..b66ab72fa7a79 100644
--- a/dev-ruby/hashdiff/hashdiff-1.1.0.ebuild
+++ b/dev-ruby/hashdiff/hashdiff-1.1.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32"
+USE_RUBY="ruby31 ruby32 ruby33"
 
 RUBY_FAKEGEM_RECIPE_TEST="rspec3"