diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index 72a2ee91..3c2b47ae 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v226
\ No newline at end of file
+v232
\ No newline at end of file
diff --git a/test/stripe/generated_examples_test.rb b/test/stripe/generated_examples_test.rb
index 3601b831..6468363c 100644
--- a/test/stripe/generated_examples_test.rb
+++ b/test/stripe/generated_examples_test.rb
@@ -826,6 +826,10 @@ module Stripe
         Stripe::Invoice.retrieve("in_xxxxxxxxxxxxx")
         assert_requested :get, "#{Stripe.api_base}/v1/invoices/in_xxxxxxxxxxxxx?"
       end
+      should "support requests with args: id, expand" do
+        Stripe::Invoice.retrieve({ expand: ["customer"], id: "in_xxxxxxxxxxxxx" })
+        assert_requested :get, "#{Stripe.api_base}/v1/invoices/in_xxxxxxxxxxxxx?expand[0]=customer"
+      end
     end
     context "Invoice.search" do
       should "support requests with args: query" do