diff --git a/example/spec/acceptance_helper.rb b/example/spec/acceptance_helper.rb
index 7b4e69f4..f187cafe 100644
--- a/example/spec/acceptance_helper.rb
+++ b/example/spec/acceptance_helper.rb
@@ -3,7 +3,7 @@
 require 'rspec_api_documentation/dsl'
 
 RspecApiDocumentation.configure do |config|
-  config.format = [:open_api, :html]
+  config.format = [:json, :open_api, :html]
   config.curl_host = 'http://localhost:3000'
   config.api_name = "Example App API"
   config.api_explanation = "API Example Description"