diff --git a/ghost/members-api/lib/repositories/product.js b/ghost/members-api/lib/repositories/product.js
index 86f4bf96a4..9607ec628b 100644
--- a/ghost/members-api/lib/repositories/product.js
+++ b/ghost/members-api/lib/repositories/product.js
@@ -142,6 +142,7 @@ class ProductRepository {
      * @param {StripePriceInput|null} data.yearly_price
      * @param {string} data.product_id
      * @param {string} data.stripe_product_id
+     * @param {number} data.trial_days
      *
      * @param {object} options
      *
@@ -186,6 +187,10 @@ class ProductRepository {
             welcome_page_url: data.welcome_page_url
         };
 
+        if (Reflect.has(data, 'trial_days')) {
+            productData.trial_days = data.trial_days;
+        }
+
         const product = await this._Product.add(productData, options);
 
         if (this._stripeAPIService.configured) {