diff --git a/colorls.gemspec b/colorls.gemspec
index 8bf8d0a..484f7b2 100644
--- a/colorls.gemspec
+++ b/colorls.gemspec
@@ -72,7 +72,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'diffy', '3.4.2'
   spec.add_development_dependency 'rake', '~> 13'
   spec.add_development_dependency 'rdoc', '~> 6.1'
-  spec.add_development_dependency 'ronn', '~> 0'
+  spec.add_development_dependency 'ronn-ng', '~> 0'
   spec.add_development_dependency 'rspec', '~> 3.7'
   spec.add_development_dependency 'rspec-its', '~> 1.2'
   spec.add_development_dependency 'rubocop', '~> 1.50.1'