diff --git a/app/Models/Estimate.php b/app/Models/Estimate.php
index bf1baf7c..447d6eb2 100644
--- a/app/Models/Estimate.php
+++ b/app/Models/Estimate.php
@@ -33,9 +33,7 @@ class Estimate extends Model implements HasMedia
     protected $dates = [
         'created_at',
         'updated_at',
-        'deleted_at',
-        'estimate_date',
-        'expiry_date'
+        'deleted_at'
     ];
 
     protected $appends = [
diff --git a/app/Models/Invoice.php b/app/Models/Invoice.php
index db93a008..a2541b74 100644
--- a/app/Models/Invoice.php
+++ b/app/Models/Invoice.php
@@ -39,9 +39,7 @@ class Invoice extends Model implements HasMedia
     protected $dates = [
         'created_at',
         'updated_at',
-        'deleted_at',
-        'invoice_date',
-        'due_date'
+        'deleted_at'
     ];
 
     protected $casts = [
diff --git a/app/Models/Payment.php b/app/Models/Payment.php
index 6ddbc9cd..8b1319dd 100644
--- a/app/Models/Payment.php
+++ b/app/Models/Payment.php
@@ -31,7 +31,7 @@ class Payment extends Model implements HasMedia
     const PAYMENT_MODE_CREDIT_CARD = 'CREDIT_CARD';
     const PAYMENT_MODE_BANK_TRANSFER = 'BANK_TRANSFER';
 
-    protected $dates = ['created_at', 'updated_at', 'payment_date'];
+    protected $dates = ['created_at', 'updated_at'];
 
     protected $guarded = ['id'];