1 files changed, 7 insertions, 0 deletions
diff --git a/guides/source/api_app.md b/guides/source/api_app.md
index a61c817597..47b9933a7f 100644
--- a/guides/source/api_app.md
+++ b/guides/source/api_app.md
@@ -395,6 +395,13 @@ included into `ActionController::API` in the rails console:
 ```bash
 $ bin/rails c
 >> ActionController::API.ancestors - ActionController::Metal.ancestors
+=> [ActionController::API, 
+    ActiveRecord::Railties::ControllerRuntime, 
+    ActionDispatch::Routing::RouteSet::MountedHelpers, 
+    ActionController::ParamsWrapper, 
+    ... , 
+    AbstractController::Rendering, 
+    ActionView::ViewPaths]
 ```
 
 ### Adding Other Modules