diff --git a/modules/nextMillenniumBidAdapter.js b/modules/nextMillenniumBidAdapter.js
index 375258176da..f873e5b5c29 100644
--- a/modules/nextMillenniumBidAdapter.js
+++ b/modules/nextMillenniumBidAdapter.js
@@ -1,4 +1,5 @@
 import { isStr, _each, parseUrl, getWindowTop, getBidIdParameter } from '../src/utils.js';
+import { getRefererInfo } from '../src/refererDetection.js';
 import { registerBidder } from '../src/adapters/bidderFactory.js';
 import { BANNER } from '../src/mediaTypes.js';
 
@@ -24,12 +25,18 @@ export const spec = {
 
     _each(validBidRequests, function(bid) {
       window.nmmRefreshCounts[bid.adUnitCode] = window.nmmRefreshCounts[bid.adUnitCode] || 0;
+      const id = getPlacementId(bid)
+
+      if (bid.sizes && !Array.isArray(bid.sizes[0])) bid.sizes = [bid.sizes]
+      if (!bid.ortb2) bid.ortb2 = {}
+      if (!bid.ortb2.device) bid.ortb2.device = {}
+      bid.ortb2.device.referrer = (getRefererInfo && getRefererInfo().ref) || ''
       const postBody = {
         'id': bid.auctionId,
         'ext': {
           'prebid': {
             'storedrequest': {
-              'id': getPlacementId(bid)
+              'id': id
             }
           },
 
@@ -39,7 +46,19 @@ export const spec = {
             'scrollTop': window.pageYOffset || document.documentElement.scrollTop
           }
         },
-        ...bid.ortb2
+        ...bid.ortb2,
+        'imp': [{
+          'banner': {
+            'format': (bid.sizes || []).map(s => { return {w: s[0], h: s[1]} })
+          },
+          'ext': {
+            'prebid': {
+              'storedrequest': {
+                'id': id
+              }
+            }
+          }
+        }]
       }
 
       const gdprConsent = bidderRequest && bidderRequest.gdprConsent;
diff --git a/test/spec/modules/nextMillenniumBidAdapter_spec.js b/test/spec/modules/nextMillenniumBidAdapter_spec.js
index 9362388b539..40005356fd8 100644
--- a/test/spec/modules/nextMillenniumBidAdapter_spec.js
+++ b/test/spec/modules/nextMillenniumBidAdapter_spec.js
@@ -114,6 +114,23 @@ describe('nextMillenniumBidAdapterTests', function() {
     expect(JSON.parse(request[0].data).ext.nextMillennium.elOffsets).to.be.an('object')
   })
 
+  it('Check if refferer was added', function() {
+    const request = spec.buildRequests(bidRequestData)
+    expect(JSON.parse(request[0].data).device.referrer).to.exist
+  })
+
+  it('Check if imp object was added', function() {
+    const request = spec.buildRequests(bidRequestData)
+    expect(JSON.parse(request[0].data).imp).to.be.an('array')
+  })
+
+  it('Check if imp prebid stored id is correct', function() {
+    const request = spec.buildRequests(bidRequestData)
+    const requestData = JSON.parse(request[0].data);
+    const storedReqId = requestData.ext.prebid.storedrequest.id;
+    expect(requestData.imp[0].ext.prebid.storedrequest.id).to.equal(storedReqId)
+  })
+
   it('Test getUserSyncs function', function () {
     const syncOptions = {
       'iframeEnabled': true