diff --git a/src/api-reference/06.shipments.md b/src/api-reference/06.shipments.md
index 45dc241b..b776cb27 100644
--- a/src/api-reference/06.shipments.md
+++ b/src/api-reference/06.shipments.md
@@ -156,6 +156,10 @@ package and only receive it when he is at least 18 years.
 Only available on <DataType type="platform" id="3" /> and carrier bpost. An additional fee is paid
 for delivery on saturdays.
 
+#### tracked
+Only available on <DataType type="platform" id="1" /> and <DataType type="package-type" id="2" /> or <DataType type="package-type" id="6" />.
+This option can be used to make a mailbox package or small parcel tracked. 
+
 ### 6.A.4 Examples
 
 ::: expand Pickup