diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index 08b883915..aafdd30ff 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v551
\ No newline at end of file
+v557
\ No newline at end of file
diff --git a/test/stripe/generated_examples_test.rb b/test/stripe/generated_examples_test.rb
index e7830b91c..b03c50f1b 100644
--- a/test/stripe/generated_examples_test.rb
+++ b/test/stripe/generated_examples_test.rb
@@ -2176,6 +2176,12 @@ class CodegennedExampleTest < Test::Unit::TestCase
         assert_requested :post, "#{Stripe.api_base}/v1/subscriptions"
       end
     end
+    context "Subscription.delete_discount" do
+      should "support requests with args: subscription_exposed_id" do
+        Stripe::Subscription.delete_discount("sub_xyz")
+        assert_requested :delete, "#{Stripe.api_base}/v1/subscriptions/sub_xyz/discount?"
+      end
+    end
     context "Subscription.list" do
       should "support requests with args: limit" do
         Stripe::Subscription.list({ limit: 3 })