diff --git a/tests/Stubs/ActiveRecord/Category.php b/tests/Stubs/ActiveRecord/Category.php
index 49e4c1561..bc85de046 100644
--- a/tests/Stubs/ActiveRecord/Category.php
+++ b/tests/Stubs/ActiveRecord/Category.php
@@ -16,7 +16,7 @@
  */
 final class Category extends ActiveRecord
 {
-    protected int|null $id;
+    protected int|null $id = null;
     protected string $name;
 
     public function getTableName(): string
diff --git a/tests/Stubs/ActiveRecord/CustomerClosureField.php b/tests/Stubs/ActiveRecord/CustomerClosureField.php
index 984766321..5acc77db1 100644
--- a/tests/Stubs/ActiveRecord/CustomerClosureField.php
+++ b/tests/Stubs/ActiveRecord/CustomerClosureField.php
@@ -16,7 +16,7 @@ final class CustomerClosureField extends ActiveRecord
     protected string $email;
     protected string $address;
     protected int $status;
-    protected int|null $profile_id;
+    protected int|null $profile_id = null;
 
     public function getTableName(): string
     {
diff --git a/tests/Stubs/ActiveRecord/CustomerForArrayable.php b/tests/Stubs/ActiveRecord/CustomerForArrayable.php
index 3a8c32fe0..ea5e0e24c 100644
--- a/tests/Stubs/ActiveRecord/CustomerForArrayable.php
+++ b/tests/Stubs/ActiveRecord/CustomerForArrayable.php
@@ -20,7 +20,7 @@ class CustomerForArrayable extends ActiveRecord
     protected string $email;
     protected string $address;
     protected int $status;
-    protected int|null $profile_id;
+    protected int|null $profile_id = null;
 
     public function getTableName(): string
     {
diff --git a/tests/Stubs/ActiveRecord/CustomerWithAlias.php b/tests/Stubs/ActiveRecord/CustomerWithAlias.php
index 4ba1fa18e..436dd45de 100644
--- a/tests/Stubs/ActiveRecord/CustomerWithAlias.php
+++ b/tests/Stubs/ActiveRecord/CustomerWithAlias.php
@@ -24,7 +24,7 @@ final class CustomerWithAlias extends ActiveRecord
     public string $email;
     public string $address;
     public int $status;
-    public int|null $profile_id;
+    public int|null $profile_id = null;
 
     public function getTableName(): string
     {
diff --git a/tests/Stubs/ActiveRecord/Order.php b/tests/Stubs/ActiveRecord/Order.php
index 8d2eb6763..3078d6589 100644
--- a/tests/Stubs/ActiveRecord/Order.php
+++ b/tests/Stubs/ActiveRecord/Order.php
@@ -20,7 +20,7 @@ class Order extends ActiveRecord
 {
     public const TABLE_NAME = 'order';
 
-    protected int|null $id;
+    protected int|null $id = null;
     protected int $customer_id;
     protected int $created_at;
     protected float $total;
diff --git a/tests/Stubs/ActiveRecord/OrderItemWithNullFK.php b/tests/Stubs/ActiveRecord/OrderItemWithNullFK.php
index 24c07fc84..a0b4c96a4 100644
--- a/tests/Stubs/ActiveRecord/OrderItemWithNullFK.php
+++ b/tests/Stubs/ActiveRecord/OrderItemWithNullFK.php
@@ -16,8 +16,8 @@
  */
 final class OrderItemWithNullFK extends ActiveRecord
 {
-    protected int|null $order_id;
-    protected int|null $item_id;
+    protected int|null $order_id = null;
+    protected int|null $item_id = null;
     protected int $quantity;
     protected float $subtotal;
 
diff --git a/tests/Stubs/ActiveRecord/OrderWithNullFK.php b/tests/Stubs/ActiveRecord/OrderWithNullFK.php
index acd10dd97..9d0cb7aa1 100644
--- a/tests/Stubs/ActiveRecord/OrderWithNullFK.php
+++ b/tests/Stubs/ActiveRecord/OrderWithNullFK.php
@@ -17,7 +17,7 @@
 final class OrderWithNullFK extends ActiveRecord
 {
     protected int $id;
-    protected int|null $customer_id;
+    protected int|null $customer_id = null;
     protected int $created_at;
     protected float $total;
 
diff --git a/tests/Stubs/ActiveRecord/Type.php b/tests/Stubs/ActiveRecord/Type.php
index d2cb1ccf4..8b4a8794d 100644
--- a/tests/Stubs/ActiveRecord/Type.php
+++ b/tests/Stubs/ActiveRecord/Type.php
@@ -33,7 +33,7 @@ final class Type extends ActiveRecord
     public int|null $smallint_col = 1;
     public string $char_col;
     public string|null $char_col2 = 'something';
-    public string|null $char_col3;
+    public string|null $char_col3 = null;
     public float $float_col;
     public float|null $float_col2 = 1.23;
     public mixed $blob_col;