diff --git a/src/Entity/PublicKeyCredentialSource.php b/src/Entity/PublicKeyCredentialSource.php
index 8ff4f7b7..0a3e1dbd 100644
--- a/src/Entity/PublicKeyCredentialSource.php
+++ b/src/Entity/PublicKeyCredentialSource.php
@@ -38,12 +38,14 @@ class PublicKeyCredentialSource extends BasePublicKeyCredentialSource
      #[ORM\Id]
      #[ORM\GeneratedValue]
      #[ORM\Column(type:"integer")]
-    private string $id;
+    private int $id;
 
     /**
-     * Override the $uvInitialized field which we do not use, but needs
+     * Override the $backupEligible, $backupStatus and $uvInitialized fields which we do not use, but needs
      * to be initialized. Needed to prevent read before written errors.
      */
+    public ?bool $backupEligible = null;
+    public ?bool $backupStatus = null;
     public ?bool $uvInitialized = false;
 
     public function __construct(
diff --git a/src/Migrations/Version20250106150814.php b/src/Migrations/Version20250106150814.php
new file mode 100644
index 00000000..df8971ab
--- /dev/null
+++ b/src/Migrations/Version20250106150814.php
@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * Copyright 2024 SURFnet B.V.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * @SuppressWarnings(PHPMD)
+ */
+final class Version20250106150814 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE public_key_credential_sources ADD backup_eligible TINYINT(1) DEFAULT NULL, ADD backup_status TINYINT(1) DEFAULT NULL, ADD uv_initialized TINYINT(1) DEFAULT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE public_key_credential_sources DROP backup_eligible, DROP backup_status, DROP uv_initialized');
+    }
+}