diff --git a/db/migrations/20201109223011_increase_identifier_length.php b/db/migrations/20201109223011_increase_identifier_length.php
new file mode 100644
index 0000000000000000000000000000000000000000..0afcb3c1dbc9803da506689e7af66bf1c76c75a8
--- /dev/null
+++ b/db/migrations/20201109223011_increase_identifier_length.php
@@ -0,0 +1,11 @@
+<?php
+
+use Phinx\Migration\AbstractMigration;
+
+class IncreaseIdentifierLength extends AbstractMigration
+{
+    public function change()
+    {
+        $this->adapter->execute("ALTER TABLE dons modify COLUMN identifier VARCHAR(255) NULL;");
+    }
+}