diff --git a/Model/Config/Source/CustomerAttribute.php b/Model/Config/Source/CustomerAttribute.php
new file mode 100644
index 0000000..2898e7e
--- /dev/null
+++ b/Model/Config/Source/CustomerAttribute.php
@@ -0,0 +1,56 @@
+<?php
+/**
+ * Copyright © Intelipost. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Intelipost\Push\Model\Config\Source;
+
+use Magento\Customer\Api\CustomerMetadataInterface;
+use Magento\Eav\Model\ResourceModel\Entity\Attribute\CollectionFactory;
+use Magento\Framework\Data\OptionSourceInterface;
+
+class CustomerAttribute implements OptionSourceInterface
+{
+    /**
+     * @var CollectionFactory
+     */
+    private $collectionFactory;
+
+    /**
+     * @param CollectionFactory $collectionFactory
+     */
+    public function __construct(CollectionFactory $collectionFactory)
+    {
+        $this->collectionFactory = $collectionFactory;
+    }
+
+    /**
+     * @return array
+     */
+    public function toOptionArray(): array
+    {
+        $collection = $this->collectionFactory
+            ->create()
+            ->setEntityTypeFilter(CustomerMetadataInterface::ATTRIBUTE_SET_ID_CUSTOMER)
+            ->addOrder('frontend_label', 'ASC');
+
+        $result = [
+            [
+                'value' => '',
+                'label' => __('Select CPF attribute')
+            ]
+        ];
+
+        foreach ($collection as $item) {
+            $result[] = [
+                'value' => $item->getAttributeCode(),
+                'label' => $item->getFrontendLabel()
+            ];
+        }
+
+        return $result;
+    }
+}
diff --git a/etc/adminhtml/system.xml b/etc/adminhtml/system.xml
index 6bf9f5f..e80fae4 100644
--- a/etc/adminhtml/system.xml
+++ b/etc/adminhtml/system.xml
@@ -20,7 +20,7 @@
             <group id="attributes" translate="label" type="text" sortOrder="0" showInDefault="1" showInWebsite="1" showInStore="1">
                 <label>Attributes</label>
                 <field id="federal_tax_payer_id" translate="label comment" type="select" sortOrder="0" showInDefault="1" showInWebsite="1" showInStore="1">
-                    <source_model>Intelipost\Quote\Model\Config\Source\Attribute</source_model>
+                    <source_model>Intelipost\Push\Model\Config\Source\CustomerAttribute</source_model>
                     <label>Federal tax payer id</label>
                     <comment>Select CPF attribute</comment>
                 </field>