diff --git a/db/migrations/20240918112441_cotisation_type.php b/db/migrations/20240918112441_cotisation_type.php
new file mode 100644
index 000000000..de523c4dd
--- /dev/null
+++ b/db/migrations/20240918112441_cotisation_type.php
@@ -0,0 +1,12 @@
+<?php
+
+use Phinx\Migration\AbstractMigration;
+
+class CotisationType extends AbstractMigration
+{
+    public function change()
+    {
+        // avant on était en float(5,2) unsigned
+        $this->execute("ALTER TABLE afup_cotisations MODIFY montant float(6,2) unsigned NOT NULL DEFAULT '0.00'");
+    }
+}