diff --git a/src/PersistentData/Model/ModelWithSlug.php b/src/PersistentData/Model/ModelWithSlug.php
index 337b869..2d69ebb 100644
--- a/src/PersistentData/Model/ModelWithSlug.php
+++ b/src/PersistentData/Model/ModelWithSlug.php
@@ -2,7 +2,7 @@
 
 use Cocur\Slugify\Slugify;
 
-class ModelWithSlug extends Model
+abstract class ModelWithSlug extends Model
 {
     protected static string $slugSource;