diff --git a/app/controllers/subscriptions_controller.rb b/app/controllers/subscriptions_controller.rb
index 198e1b6c..ef634b83 100644
--- a/app/controllers/subscriptions_controller.rb
+++ b/app/controllers/subscriptions_controller.rb
@@ -17,6 +17,7 @@ class SubscriptionsController < ApplicationController
         quantity: 1
       } ],
       mode: "subscription",
+      allow_promotion_codes: true,
       success_url: settings_billing_url,
       cancel_url: settings_billing_url
     })