diff --git a/src/Api/HostsApi.php b/src/Api/HostsApi.php
index 854938c..6257192 100644
--- a/src/Api/HostsApi.php
+++ b/src/Api/HostsApi.php
@@ -91,7 +91,7 @@ public function update(
         ];
 
         if ($addresses instanceof DnsHostAddressCollection) {
-            $payload['billables'] = $addresses->toArray();
+            $payload['addresses'] = $addresses->toArray();
         }
 
         $this->client->post(sprintf('v2/hosts/%s/update', $hostName), $payload);