diff --git a/src/Picqer/Financials/Moneybird/Entities/Estimate.php b/src/Picqer/Financials/Moneybird/Entities/Estimate.php
index <HASH>..<HASH> 100644
--- a/src/Picqer/Financials/Moneybird/Entities/Estimate.php
+++ b/src/Picqer/Financials/Moneybird/Entities/Estimate.php
@@ -33,6 +33,7 @@ class Estimate extends Model
         'id',
         'administration_id',
         'contact_id',
+        'contact_person_id',
         'contact',
         'estimate_id',
         'workflow_id',
Add `contact_person_id` as fillable field to estimate entity