fernet.gemspec in fernet-1.5 vs fernet.gemspec in fernet-1.6

@@ -13,7 +13,9 @@
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.name          = "fernet"
   gem.require_paths = ["lib"]
   gem.version       = Fernet::VERSION
 
+  gem.add_dependency "yajl-ruby"
+
   gem.add_development_dependency "rspec"
 end