diff --git a/packages/react-shopper-hooks/src/cart/hooks/use-add-subscription-item.ts b/packages/react-shopper-hooks/src/cart/hooks/use-add-subscription-item.ts
index 4d67eebe..39a238c7 100644
--- a/packages/react-shopper-hooks/src/cart/hooks/use-add-subscription-item.ts
+++ b/packages/react-shopper-hooks/src/cart/hooks/use-add-subscription-item.ts
@@ -28,8 +28,10 @@ export const useAddSubscriptionItemToCart = (
   return useMutation({
     mutationFn: async ({ additionalHeaders, ...req }) => {
       const body = {
-        type: "subscription_item",
-        ...req,
+        data: {
+          type: "subscription_item",
+          ...req,
+        }
       }
 
       return client.request.send(