diff --git a/db/migrations/20251217120000_warehouse_stocktake_item_add_overwritten.php b/db/migrations/20251217120000_warehouse_stocktake_item_add_overwritten.php
new file mode 100644
index 000000000..9d99da9a4
--- /dev/null
+++ b/db/migrations/20251217120000_warehouse_stocktake_item_add_overwritten.php
@@ -0,0 +1,25 @@
+<?php
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class WarehouseStocktakeItemAddOverwritten extends AbstractMigration
+{
+    public function up(): void
+    {
+        if ($this->getEnvironment() == "thetool") {
+            $table = $this->table('WarehouseStocktakeItem');
+            $table->addColumn('overwrittenById', 'integer', ['null' => true, 'signed' => true, 'after' => 'scannedBy'])
+                ->update();
+        }
+    }
+
+    public function down(): void
+    {
+        if ($this->getEnvironment() == "thetool") {
+            $table = $this->table('WarehouseStocktakeItem');
+            $table->removeColumn('overwrittenById')
+                ->update();
+        }
+    }
+}