diff --git a/src/Stepper.php b/src/Stepper.php
index 54a551f..15d11de 100644
--- a/src/Stepper.php
+++ b/src/Stepper.php
@@ -84,6 +84,7 @@ class Stepper
         $client->post(STEPPER_URL, [
             'json' => $payload,
             'headers' => [
+                'Accept' => 'application/json',
                 'Content-Type' => 'application/json',
                 'Authorization' => 'Bearer ' . STEPPER_TOKEN,
             ]