diff --git a/modules/admaticBidAdapter.js b/modules/admaticBidAdapter.js
index 2a3ec5499e6..0287ff3de33 100644
--- a/modules/admaticBidAdapter.js
+++ b/modules/admaticBidAdapter.js
@@ -137,7 +137,7 @@ export const spec = {
           SYNC_URL = 'https://static.cdn.admatic.de/admaticde/sync.html';
           break;
         case 'adt':
-          SYNC_URL = 'https://static.cdn.adtarget.org/adt/sync.html';
+          SYNC_URL = 'https://static.cdn.adtarget.biz/adt/sync.html';
           break;
         default:
           SYNC_URL = 'https://static.cdn.admatic.com.tr/sync.html';