diff --git a/src/Traits/VersionColumn.php b/src/Traits/VersionColumn.php
index c3c73bd..c42c830 100644
--- a/src/Traits/VersionColumn.php
+++ b/src/Traits/VersionColumn.php
@@ -1,33 +1,25 @@
 <?php
+
 /**
  * NetBrothers VersionBundle
  *
  * @author Stefan Wessel, NetBrothers GmbH
- * @date 23.03.21
- *
  */
 
 namespace NetBrothers\VersionBundle\Traits;
+
 use Doctrine\ORM\Mapping as ORM;
 
-/**
- * Trait VersionColumn
- * @package NetBrothers\VersionBundle\Traits
- */
 trait VersionColumn
 {
     /**
-     * @ORM\Column(type="integer", nullable=true, options={"default" : 1})
-     * @var int
+     * @ORM\Column(type="integer", nullable=false, options={"default": 1})
      */
-    protected $version = 1;
+    #[ORM\Column(type: 'integer', nullable: false, options: ['default' => 1])]
+    protected int $version = 1;
 
-    /**
-     * @return int
-     */
-    public function getVersion(): ?int
+    public function getVersion(): int
     {
         return $this->version;
     }
-
-}
\ No newline at end of file
+}