diff --git a/README.md b/README.md
index bf8f1440..e14b68dd 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # UPDATE 2023-10-08:
-This project has now being officailly transferred to [Invertase](https://github.com/invertase), who will maintain this extension going forward. Please see [this issue](https://github.com/stripe/stripe-firebase-extensions/issues/524) for more details. 
-It is now reccomended to uninstall the `stripe/firestore-stripe-payments` extension and install `invertase/firestore-stripe-payments` from the Firebase Extension Hub.
+This project has now being officially transferred to [Invertase](https://github.com/invertase), who will maintain this extension going forward. Please see [this issue](https://github.com/stripe/stripe-firebase-extensions/issues/524) for more details. 
+It is now recommended to uninstall the `stripe/firestore-stripe-payments` extension and install `invertase/firestore-stripe-payments` from the Firebase Extension Hub.
 
-Alternativley, you can also use the following link to convert your current installation to the Invertase version
+Alternatively, you can also use the following link to convert your current installation to the Invertase version
 
 `https://console.firebase.google.com/project/_/extensions/install?instanceId=STRIPE_EXTENSION_INSTANCE_ID&ref=invertase%2Ffirestore-stripe-payments@0.3.5`
 
diff --git a/firestore-stripe-payments/functions/src/index.ts b/firestore-stripe-payments/functions/src/index.ts
index 74a72472..5c97168e 100644
--- a/firestore-stripe-payments/functions/src/index.ts
+++ b/firestore-stripe-payments/functions/src/index.ts
@@ -136,6 +136,7 @@ exports.createCheckoutSession = functions
       allow_promotion_codes = false,
       trial_period_days,
       line_items,
+      payment_intent_data,
       billing_address_collection = 'required',
       collect_shipping_address = false,
       customer_update = {},
@@ -220,10 +221,12 @@ exports.createCheckoutSession = functions
             sessionCreateParams.subscription_data.default_tax_rates = tax_rates;
           }
         } else if (mode === 'payment') {
-          sessionCreateParams.payment_intent_data = {
-            metadata,
-            ...(setup_future_usage && { setup_future_usage }),
-          };
+          sessionCreateParams.payment_intent_data = payment_intent_data ?
+            payment_intent_data :
+            {
+              metadata,
+              ...(setup_future_usage && {setup_future_usage}),
+            };
           if (invoice_creation) {
             sessionCreateParams.invoice_creation = {
               enabled: true,