diff --git a/sections/purchases.md b/sections/purchases.md
index 02cdff0..6272b69 100644
--- a/sections/purchases.md
+++ b/sections/purchases.md
@@ -121,6 +121,8 @@ It's also possible to filter:
 - **term** – full text search on purchase positions,
 - **company_id** – identifier of the supplier, pass _0_ to get the purchases not associated to a supplier,
 - **status** – "pending" or "archived" (Inbox / Archive)
+- **approval_status** – "none", "approved", "denied" or "pending"
+- **approver_user_id** – User ID
 - **not_booked** – true/false
 - **tags** – "Transportation, Restaurants" (comma separated list)
 - **date** – date range in the form _2020-02-01:2020-02-22_