diff --git a/docs/custom_policy.md b/docs/custom_policy.md
index 5dea819..962c10e 100644
--- a/docs/custom_policy.md
+++ b/docs/custom_policy.md
@@ -16,6 +16,15 @@ class ActionPolicy::Base
   include ActionPolicy::Policy::CachedApply
   include ActionPolicy::Policy::Defaults
 
+  # Rails-specific scoping extensions
+  extend ActionPolicy::ScopeMatchers::ActiveRecord
+  scope_matcher :active_record_relation, ActiveRecord::Relation
+  extend ActionPolicy::ScopeMatchers::ActionControllerParams
+  scope_matcher :action_controller_params, ActionController::Parameters
+
+  # Active Support notifications
+  prepend ActionPolicy::Policy::Rails::Instrumentation
+
   # ActionPolicy::Policy::Defaults module adds the following
 
   authorize :user