diff --git a/private/lib/Database/Migration/Version20210627094934.php b/private/lib/Database/Migration/Version20210627094934.php
index 0fce7de..27de4bf 100644
--- a/private/lib/Database/Migration/Version20210627094934.php
+++ b/private/lib/Database/Migration/Version20210627094934.php
@@ -4,62 +4,18 @@
 
 namespace App\Database\Migration;
 
-use App\Database\Database;
-use App\Database\Model\Category;
-use App\Database\Repository\CategoryRepository;
-use App\Database\Repository\UserRepository;
 use Doctrine\DBAL\Schema\Schema;
 use Doctrine\Migrations\AbstractMigration;
 
 final class Version20210627094934 extends AbstractMigration
 {
-    public function getDescription(): string
-    {
-        return '';
-    }
-
     public function up(Schema $schema): void
     {
-        $this->addSql('ALTER TABLE categories ADD sortOrder INT NOT NULL');
+        $this->addSql('ALTER TABLE categories ADD sortOrder INT NOT NULL DEFAULT 0;');
     }
 
     public function down(Schema $schema): void
     {
         $this->addSql('ALTER TABLE categories DROP sortOrder');
     }
-
-    public function postUp(Schema $schema): void
-    {
-        $database = Database::getInstance();
-        $cache = $database->getEntityManager()->getConfiguration()->getMetadataCache();
-        if ($cache !== null) {
-            $cache->clear();
-        }
-
-        $this->setOrderForExistingCategories();
-    }
-
-    private function setOrderForExistingCategories(): void
-    {
-        $userRepository = new UserRepository();
-        $users = $userRepository->getAll();
-
-        $categoryRepository = new CategoryRepository();
-
-        foreach ($users as $user) {
-            $categories = $categoryRepository->findByUser($user);
-
-            // Sort categories by id in ASC order
-            usort($categories, static fn (Category $a, Category $b) => (int)($a->getId() > $b->getId()));
-
-            for ($i = 0; $i < count($categories); $i++) {
-                $category = $categories[$i];
-                $category->setSortOrder($i + 1);
-
-                $categoryRepository->queue($category);
-            }
-        }
-
-        $categoryRepository->save();
-    }
 }