workflow.gemspec in workflow-1.0.0 vs workflow.gemspec in workflow-1.1.0

@@ -25,7 +25,8 @@
   gem.add_development_dependency 'bundler', [">= 1.0.0"]
   gem.add_development_dependency 'activerecord'
   gem.add_development_dependency 'sqlite3'
   gem.add_development_dependency 'mocha'
   gem.add_development_dependency 'rake'
+  gem.add_development_dependency 'ruby-graphviz', ['>= 1.0']
 end