regexp-examples.gemspec in regexp-examples-1.5.0 vs regexp-examples.gemspec in regexp-examples-1.5.1

@@ -15,8 +15,9 @@
   s.require_paths    = ['lib']
   s.homepage         = 'http://rubygems.org/gems/regexp-examples'
   s.add_development_dependency 'bundler', '> 1.7'
   s.add_development_dependency 'rake', '~> 12.0'
   s.add_development_dependency 'pry', '~> 0.12.0'
+  s.add_development_dependency 'warning', '~> 0.10.0'
   s.license          = 'MIT'
   s.required_ruby_version = '>= 2.4.0'
 end