diff --git a/tests/Feature/MultiPaymentDeleteTest.php b/tests/Feature/MultiPaymentDeleteTest.php
index 8a75edaeb78d..a1a2dc3b5879 100644
--- a/tests/Feature/MultiPaymentDeleteTest.php
+++ b/tests/Feature/MultiPaymentDeleteTest.php
@@ -220,6 +220,7 @@ class MultiPaymentDeleteTest extends TestCase
         $this->assertEquals(162, $invoice->client->fresh()->balance);
         $this->assertEquals(163, $invoice->client->fresh()->paid_to_date);
 
+        usleep(800);
         // Pay 162 again and create payment #3
 
         $data = [
@@ -233,6 +234,7 @@ class MultiPaymentDeleteTest extends TestCase
                 ],
             ],
             'date' => '2019/12/12',
+            'idempotency_key' => md5(time()),
         ];
 
         $response = $this->withHeaders([