diff --git a/modules/craftBidAdapter.js b/modules/craftBidAdapter.js
index b98b72b59ad..812ec53d686 100644
--- a/modules/craftBidAdapter.js
+++ b/modules/craftBidAdapter.js
@@ -5,6 +5,7 @@ import { auctionManager } from '../src/auctionManager.js';
 import find from 'core-js-pure/features/array/find.js';
 import includes from 'core-js-pure/features/array/includes.js';
 import { getStorageManager } from '../src/storageManager.js';
+import {ajax} from '../src/ajax.js';
 
 const BIDDER_CODE = 'craft';
 const URL_BASE = 'https://gacraft.jp/prebid-v3';
@@ -110,9 +111,10 @@ export const spec = {
   },
 
   onBidWon: function(bid) {
-    var xhr = new XMLHttpRequest();
-    xhr.open('POST', bid._prebidWon);
-    xhr.send();
+    ajax(bid._prebidWon, null, null, {
+      method: 'POST',
+      contentType: 'application/json'
+    });
   }
 };