diff --git a/db/migrations/20261006090000_fix_cotisations_type_reglement.php b/db/migrations/20261006090000_fix_cotisations_type_reglement.php
new file mode 100644
index 000000000..9545e25ed
--- /dev/null
+++ b/db/migrations/20261006090000_fix_cotisations_type_reglement.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+class FixCotisationsTypeReglement extends AbstractMigration
+{
+    public function up(): void
+    {
+        $this->execute('UPDATE afup_cotisations SET type_reglement = 3 WHERE type_reglement NOT IN (0, 1, 2, 3, 4)');
+    }
+}