diff --git a/washout_builder.gemspec b/washout_builder.gemspec
index fe6996a..75eb569 100644
--- a/washout_builder.gemspec
+++ b/washout_builder.gemspec
@@ -21,4 +21,22 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency 'wash_out', '>= 0.9.1', '>= 0.9.1'
   s.add_runtime_dependency 'activesupport', '>= 4.0', '>= 4.0'
+  
+  s.add_development_dependency 'wasabi', '~> 3.5', '>= 3.5'
+  s.add_development_dependency 'savon', '~> 2.11', '>= 2.11'
+  s.add_development_dependency 'httpi', '~> 2.4', '>= 2.4'
+  s.add_development_dependency 'nokogiri', '~> 1.7', '>= 1.7'
+
+  s.add_development_dependency 'rspec-rails','4.0.0.beta3'
+  s.add_development_dependency 'appraisal', '~> 2.1', '>= 2.1'
+  s.add_development_dependency 'simplecov', '~> 0.12', '>= 0.12'
+  s.add_development_dependency 'simplecov-summary', '~> 0.0.5', '>= 0.0.5'
+  s.add_development_dependency 'mocha','~> 1.2', '>= 1.2'
+  s.add_development_dependency 'coveralls','~> 0.8', '>= 0.8'
+
+  s.add_development_dependency "yard", '~> 0.9', '>= 0.9.20'
+  s.add_development_dependency 'yard-rspec', '~> 0.1', '>= 0.1'
+  s.add_development_dependency 'redcarpet', '~> 3.4', '>= 3.4'
+  s.add_development_dependency 'github-markup', '~> 1.4', '>= 1.4'
+  s.add_development_dependency 'inch', '~> 0.7'
 end