onebox.gemspec in onebox-1.5.10 vs onebox.gemspec in onebox-1.5.11

@@ -31,9 +31,12 @@
   spec.add_development_dependency "pry", "~> 0.9"
   spec.add_development_dependency "mocha", "~> 0.14"
   spec.add_development_dependency "rubocop", "~> 0.11"
   spec.add_development_dependency "twitter", "~> 4.8"
   spec.add_development_dependency "guard-rspec", "~> 4.2.8"
+  spec.add_development_dependency "sinatra", "~> 1.4"
+  spec.add_development_dependency "sinatra-contrib", "~> 1.4"
+  spec.add_development_dependency "haml", "~> 4.0"
   # listen current is a bit broken
   # http://stackoverflow.com/questions/21319753/readline-seems-to-be-broken
   spec.add_development_dependency "listen", "= 2.6.0"
 end