diff --git a/src/main/resources/bidder-config/oms.yaml b/src/main/resources/bidder-config/oms.yaml
index 70894c9787d..463fbbab2c6 100644
--- a/src/main/resources/bidder-config/oms.yaml
+++ b/src/main/resources/bidder-config/oms.yaml
@@ -1,6 +1,7 @@
 adapters:
   oms:
     endpoint: http://rt.marphezis.com/pbs?publisherId={PublisherId}
+    modifying-vast-xml-allowed: true
     meta-info:
       maintainer-email: prebid@onlinemediasolutions.com
       app-media-types:
@@ -10,4 +11,9 @@ adapters:
         - banner
         - video
       supported-vendors:
-      vendor-id: 0
+      vendor-id: 883
+    usersync:
+      cookie-family-name: oms
+      iframe:
+        url: https://rt.marphezis.com/sync/pub?pubid=pbs&gdpr={gdpr}&gdpr_consent={gdpr_consent}&us_privacy={us_privacy}&gpp={gpp}&gpp_sid={gpp_sid}&rurl={redirect_url}
+        uid-macro: $USERID