diff --git a/modules/openxBidAdapter.js b/modules/openxBidAdapter.js
index 952e706ef7d..ee1fa58a4e9 100644
--- a/modules/openxBidAdapter.js
+++ b/modules/openxBidAdapter.js
@@ -8,7 +8,7 @@ import {parse} from 'src/url';
 const SUPPORTED_AD_TYPES = [BANNER, VIDEO];
 const BIDDER_CODE = 'openx';
 const BIDDER_CONFIG = 'hb_pb';
-const BIDDER_VERSION = '2.1.4';
+const BIDDER_VERSION = '2.1.5';
 
 let shouldSendBoPixel = true;
 
@@ -222,6 +222,10 @@ function buildCommonQueryParamsFromBids(bids, bidderRequest) {
     }
   }
 
+  if (bids[0].crumbs && bids[0].crumbs.pubcid) {
+    defaultParams.pubcid = bids[0].crumbs.pubcid;
+  }
+
   return defaultParams;
 }
 
diff --git a/test/spec/modules/openxBidAdapter_spec.js b/test/spec/modules/openxBidAdapter_spec.js
index bce6b2e4acf..eff78b4d9a3 100644
--- a/test/spec/modules/openxBidAdapter_spec.js
+++ b/test/spec/modules/openxBidAdapter_spec.js
@@ -781,6 +781,37 @@ describe('OpenxAdapter', function () {
       const request = spec.buildRequests(bidRequestsWithDnt);
       expect(request[0].data.ns).to.equal(1);
     });
+
+    describe('publisher common id query param', function() {
+      it('should not send a pubcid query param when there is no crumbs.pubcid defined in the bid requests', function () {
+        const request = spec.buildRequests(bidRequestsWithMediaType);
+        expect(request[0].data).to.not.have.any.keys('pubcid');
+      });
+
+      it('should send a pubcid query param when crumbs.pubcid is defined in the bid requests', function () {
+        const bidRequestsWithPubcid = [{
+          bidder: 'openx',
+          params: {
+            unit: '11',
+            delDomain: 'test-del-domain'
+          },
+          crumbs: {
+            pubcid: 'c4a4c843-2368-4b5e-b3b1-6ee4702b9ad6'
+          },
+          adUnitCode: 'adunit-code',
+          mediaTypes: {
+            banner: {
+              sizes: [[300, 250], [300, 600]]
+            }
+          },
+          bidId: 'test-bid-id-1',
+          bidderRequestId: 'test-bid-request-1',
+          auctionId: 'test-auction-1'
+        }];
+        const request = spec.buildRequests(bidRequestsWithPubcid);
+        expect(request[0].data.pubcid).to.equal('c4a4c843-2368-4b5e-b3b1-6ee4702b9ad6');
+      });
+    })
   });
 
   describe('buildRequests for video', function () {