diff --git a/modules/rubiconAnalyticsAdapter.js b/modules/rubiconAnalyticsAdapter.js
index f06af144b54..3237facb2e7 100644
--- a/modules/rubiconAnalyticsAdapter.js
+++ b/modules/rubiconAnalyticsAdapter.js
@@ -231,7 +231,8 @@ function sendMessage(auctionId, bidWonId) {
       clientTimeoutMillis: auctionCache.timeout,
       samplingFactor,
       accountId,
-      adUnits: Object.keys(adUnitMap).map(i => adUnitMap[i])
+      adUnits: Object.keys(adUnitMap).map(i => adUnitMap[i]),
+      requestId: auctionId
     };
 
     // pick our of top level floor data we want to send!
diff --git a/test/spec/modules/rubiconAnalyticsAdapter_spec.js b/test/spec/modules/rubiconAnalyticsAdapter_spec.js
index 3cfaa448472..df8bf03b56a 100644
--- a/test/spec/modules/rubiconAnalyticsAdapter_spec.js
+++ b/test/spec/modules/rubiconAnalyticsAdapter_spec.js
@@ -374,6 +374,7 @@ const ANALYTICS_MESSAGE = {
   'referrerHostname': 'www.test.com',
   'auctions': [
     {
+      'requestId': '25c6d7f5-699a-4bfc-87c9-996f915341fa',
       'clientTimeoutMillis': 3000,
       'serverTimeoutMillis': 1000,
       'accountId': 1001,