diff --git a/lib/recurly/subscription.rb b/lib/recurly/subscription.rb
index 5eea3e49f..694ac1a17 100644
--- a/lib/recurly/subscription.rb
+++ b/lib/recurly/subscription.rb
@@ -109,6 +109,7 @@ class Subscription < Resource
       gateway_code
       transaction_type
       action_result
+      proration_settings
     )
     alias to_param uuid