diff --git a/db/migrations/20260816000000_make_transaction_payment_type_nullable.php b/db/migrations/20260816000000_make_transaction_payment_type_nullable.php
new file mode 100644
index 000000000..8cfccc2eb
--- /dev/null
+++ b/db/migrations/20260816000000_make_transaction_payment_type_nullable.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class MakeTransactionPaymentTypeNullable extends AbstractMigration
+{
+    public function up(): void
+    {
+        $this->table('compta')
+            ->changeColumn('idmode_regl', 'integer', [
+                'limit' => 5,
+                'null' => true,
+                'default' => null,
+            ])
+            ->update();
+
+        $this->execute('UPDATE compta SET idmode_regl = NULL WHERE idmode_regl = 0');
+    }
+
+    public function down(): void
+    {
+        $this->execute('UPDATE compta SET idmode_regl = 0 WHERE idmode_regl IS NULL');
+
+        $this->table('compta')
+            ->changeColumn('idmode_regl', 'integer', [
+                'limit' => 5,
+                'null' => false,
+                'default' => 0,
+            ])
+            ->update();
+    }
+}
diff --git a/db/seeds/ComptaCompte.php b/db/seeds/ComptaCompte.php
index d515d6e77..05b5e4874 100644
--- a/db/seeds/ComptaCompte.php
+++ b/db/seeds/ComptaCompte.php
@@ -27,6 +27,14 @@ public function run(): void
                 'nom_compte' => 'Paypal',
                 'archived_at' => new DateTime('last year')->format('Y-m-d H:i:s'),
             ],
+            [
+                'id' => 5,
+                'nom_compte' => 'Compte courant CMUT',
+            ],
+            [
+                'id' => 6,
+                'nom_compte' => 'Livret CMUT',
+            ],
         ];
 
         $table = $this->table('compta_compte');