diff --git a/templates/stripe_html/index.html b/templates/stripe_html/index.html
index 0a30333..641afcb 100644
--- a/templates/stripe_html/index.html
+++ b/templates/stripe_html/index.html
@@ -569,7 +569,8 @@
'Content-Type': 'application/json',
},
body: JSON.stringify({
- subscriptionId: subscriptionId
+ subscriptionId: subscriptionId,
+ couponCode: couponCode
}),
})
.then((result) => {