diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1209b0b..6657960 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,10 @@ Released with 2meet-data-optimizer 1.3.0 (hardening 2.3).
   status `refunded`; untracked orders get none). Repeated events still leave
   one row per order and vendor. dev36: partial refund then completion records
   the refunded amount. (PR-092)
+- Amounts follow Marketplace::get_order_profit() (what the vendor is paid,
+  which subtracts the full tax after refunds); the subtotal is floored at 0,
+  so a fully refunded taxed order no longer records a negative commission.
+  (PR-112)
 
 ### Upgrading