usaidwat.gemspec in usaidwat-1.5.0 vs usaidwat.gemspec in usaidwat-1.5.1

@@ -35,9 +35,10 @@
   gem.add_runtime_dependency('sysexits', '~> 1.2')
   gem.add_runtime_dependency('ttycaca', '~> 1.0')
 
   gem.add_development_dependency('aruba', '~> 0.9')
   gem.add_development_dependency('cucumber', '~> 2.0')
+  gem.add_development_dependency('rake', '~> 12.0')
   gem.add_development_dependency('rspec', '~> 3.2')
   gem.add_development_dependency('timecop', '~> 0.8.0')
   gem.add_development_dependency('webmock', '~> 2.0')
 end