diff --git a/dev-ruby/diff-lcs/diff-lcs-1.6.1.ebuild b/dev-ruby/diff-lcs/diff-lcs-1.6.1.ebuild
index ab3d007dd0161..203e74297b9b5 100644
--- a/dev-ruby/diff-lcs/diff-lcs-1.6.1.ebuild
+++ b/dev-ruby/diff-lcs/diff-lcs-1.6.1.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_RECIPE_TEST="rspec3"