diff --git a/modules/colossussspBidAdapter.js b/modules/colossussspBidAdapter.js
index 0f7daf8fda9..52865b8085d 100644
--- a/modules/colossussspBidAdapter.js
+++ b/modules/colossussspBidAdapter.js
@@ -109,7 +109,8 @@ export const spec = {
       if (bid.userId) {
         getUserId(placement.eids, bid.userId.britepoolid, 'britepool.com');
         getUserId(placement.eids, bid.userId.idl_env, 'identityLink');
-        getUserId(placement.eids, bid.userId.id5id, 'id5-sync.com')
+        getUserId(placement.eids, bid.userId.id5id, 'id5-sync.com');
+        getUserId(placement.eids, bid.userId.uid2 && bid.userId.uid2.id, 'uidapi.com');
         getUserId(placement.eids, bid.userId.tdid, 'adserver.org', {
           rtiPartner: 'TDID'
         });
diff --git a/test/spec/modules/colossussspBidAdapter_spec.js b/test/spec/modules/colossussspBidAdapter_spec.js
index 150bcb72121..fa543f28fd1 100644
--- a/test/spec/modules/colossussspBidAdapter_spec.js
+++ b/test/spec/modules/colossussspBidAdapter_spec.js
@@ -110,6 +110,7 @@ describe('ColossussspAdapter', function () {
     bid.userId.idl_env = 'idl_env123';
     bid.userId.tdid = 'tdid123';
     bid.userId.id5id = { uid: 'id5id123' };
+    bid.userId.uid2 = { id: 'uid2id123' };
     let serverRequest = spec.buildRequests([bid], bidderRequest);
     it('Returns valid data if array of bids is valid', function () {
       let data = serverRequest.data;
@@ -119,11 +120,11 @@ describe('ColossussspAdapter', function () {
         let placement = placements[i];
         expect(placement).to.have.property('eids')
         expect(placement.eids).to.be.an('array')
-        expect(placement.eids.length).to.be.equal(4)
+        expect(placement.eids.length).to.be.equal(5)
         for (let index in placement.eids) {
           let v = placement.eids[index];
           expect(v).to.have.all.keys('source', 'uids')
-          expect(v.source).to.be.oneOf(['britepool.com', 'identityLink', 'adserver.org', 'id5-sync.com'])
+          expect(v.source).to.be.oneOf(['britepool.com', 'identityLink', 'adserver.org', 'id5-sync.com', 'uidapi.com'])
           expect(v.uids).to.be.an('array');
           expect(v.uids.length).to.be.equal(1)
           expect(v.uids[0]).to.have.property('id')