diff --git a/src/BaseClient.php b/src/BaseClient.php
index 761db1a..6f1f1e3 100644
--- a/src/BaseClient.php
+++ b/src/BaseClient.php
@@ -396,7 +396,7 @@ private function prepareAndExecuteRequest(string $method, string $url, array $op
 
         // encode the body if a model is supplied for it
         if (isset($options['body']) && $options['body'] instanceof AbstractModel) {
-            $httpOptions['headers']['Content-Type'] = static::API_CONTENT_TYPE_JSON;
+            $httpOptions['headers']['Content-Type'] = $options['produces'] ?? static::API_CONTENT_TYPE_JSON;
             $httpOptions['body'] = json_encode($options['body']->toArray(true));
         }