diff --git a/src/ContextTypes/Product.php b/src/ContextTypes/Product.php
index 4f77cd6..3e99163 100644
--- a/src/ContextTypes/Product.php
+++ b/src/ContextTypes/Product.php
@@ -14,6 +14,7 @@ class Product extends AbstractContext
         'brand' => null,
         'image' => null,
         'sku' => null,
+        'productID' => null,
         'url' => null,
         'review' => Review::class,
         'aggregateRating' => AggregateRating::class,