diff --git a/roo.gemspec b/roo.gemspec
index c6561c22..562568df 100644
--- a/roo.gemspec
+++ b/roo.gemspec
@@ -23,6 +23,7 @@ Gem::Specification.new do |spec|
     spec.required_ruby_version  = ">= 2.7.0"
   end
 
+  spec.add_dependency 'csv', '~> 3'
   spec.add_dependency 'nokogiri', '~> 1'
   spec.add_dependency 'rubyzip', '>= 1.3.0', '< 3.0.0'