dry-behaviour.gemspec in dry-behaviour-0.5.2 vs dry-behaviour.gemspec in dry-behaviour-0.6.0

@@ -26,8 +26,9 @@
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'bundler', '~> 1.10'
   spec.add_development_dependency 'awesome_print', '~> 1.7'
   spec.add_development_dependency 'rake', '~> 10.0'
+  spec.add_development_dependency 'benchmark-ips', '~> 2.7'
   spec.add_development_dependency 'rspec'
   spec.add_development_dependency 'pry'
 end