diff --git a/doc/commerce.md b/doc/commerce.md
index 91664f66d0..a3bdf04d1d 100644
--- a/doc/commerce.md
+++ b/doc/commerce.md
@@ -8,6 +8,8 @@ Faker::Commerce.department #=> "Grocery, Health & Beauty"
 Faker::Commerce.department(5) #=> "Grocery, Books, Health & Beauty"
 Faker::Commerce.department(2, true) #=> "Books & Tools"
 
+Faker::Commerce.material #=> "Steel"
+
 Faker::Commerce.product_name #=> "Practical Granite Shirt"
 
 Faker::Commerce.price #=> "44.6"