diff --git a/app/Models/Process.php b/app/Models/Process.php
index ecb8d0ea..d7c6d368 100644
--- a/app/Models/Process.php
+++ b/app/Models/Process.php
@@ -14,6 +14,7 @@ class Process extends Model
 
     protected $fillable = [
         'tenant_id',
+        'parent_id',
         'process_code',
         'process_name',
         'is_active',