diff --git a/app/controllers/internal_controller.rb b/app/controllers/internal_controller.rb
index 136fe1d2..1eb0488c 100644
--- a/app/controllers/internal_controller.rb
+++ b/app/controllers/internal_controller.rb
@@ -115,4 +115,10 @@ def show_registration
     registration = Registration.find(attendee_id)
     render json: registration
   end
+
+  def history
+    attendee_id = params.require(:attendee_id)
+    history = RegistrationHistory.find(attendee_id)
+    render json: history
+  end
 end
diff --git a/config/routes.rb b/config/routes.rb
index a748c3b1..8cf590d6 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -13,6 +13,7 @@
   get '/api/internal/v1/:competition_id/registrations', to: 'internal#list_registrations'
   post '/api/internal/v1/:competition_id/add', to: 'internal#create'
   get '/api/internal/v1/:attendee_id', to: 'internal#show_registration'
+  get '/api/internal/v1/:attendee_id/history', to: 'internal#history'
   get '/api/internal/v1/users/:user_id/registrations', to: 'internal#registrations_for_user'
   get '/api/v1/register', to: 'registration#show'
   post '/api/v1/register', to: 'registration#create'