diff --git a/modules/colossussspBidAdapter.js b/modules/colossussspBidAdapter.js
index 52865b8085d..b000cefd1b2 100644
--- a/modules/colossussspBidAdapter.js
+++ b/modules/colossussspBidAdapter.js
@@ -106,6 +106,10 @@ export const spec = {
       if (bid.schain) {
         placement.schain = bid.schain;
       }
+      let gpid = utils.deepAccess(bid, 'ortb2Imp.ext.data.pbadslot');
+      if (gpid) {
+        placement.gpid = gpid;
+      }
       if (bid.userId) {
         getUserId(placement.eids, bid.userId.britepoolid, 'britepool.com');
         getUserId(placement.eids, bid.userId.idl_env, 'identityLink');
diff --git a/test/spec/modules/colossussspBidAdapter_spec.js b/test/spec/modules/colossussspBidAdapter_spec.js
index fa543f28fd1..0fe4d5b358e 100644
--- a/test/spec/modules/colossussspBidAdapter_spec.js
+++ b/test/spec/modules/colossussspBidAdapter_spec.js
@@ -1,5 +1,5 @@
-import {expect} from 'chai';
-import {spec} from '../../../modules/colossussspBidAdapter.js';
+import { expect } from 'chai';
+import { spec } from '../../../modules/colossussspBidAdapter.js';
 
 describe('ColossussspAdapter', function () {
   let bid = {
@@ -16,6 +16,13 @@ describe('ColossussspAdapter', function () {
         sizes: [[300, 250]]
       }
     },
+    ortb2Imp: {
+      ext: {
+        data: {
+          pbadslot: '/19968336/prebid_cache_video_adunit'
+        }
+      }
+    },
     transactionId: '3bb2f6da-87a6-4029-aeb0-bfe951372e62',
     schain: {
       ver: '1.0',
@@ -71,7 +78,7 @@ describe('ColossussspAdapter', function () {
     it('Returns valid URL', function () {
       expect(serverRequest.url).to.equal('https://colossusssp.com/?c=o&m=multi');
     });
-    it('Should contain ccpa', function() {
+    it('Should contain ccpa', function () {
       expect(serverRequest.data.ccpa).to.be.an('string')
     })
 
@@ -88,13 +95,14 @@ describe('ColossussspAdapter', function () {
       let placements = data['placements'];
       for (let i = 0; i < placements.length; i++) {
         let placement = placements[i];
-        expect(placement).to.have.all.keys('placementId', 'eids', 'bidId', 'traffic', 'sizes', 'schain', 'floor');
+        expect(placement).to.have.all.keys('placementId', 'eids', 'bidId', 'traffic', 'sizes', 'schain', 'floor', 'gpid');
         expect(placement.schain).to.be.an('object')
         expect(placement.placementId).to.be.a('number');
         expect(placement.bidId).to.be.a('string');
         expect(placement.traffic).to.be.a('string');
         expect(placement.sizes).to.be.an('array');
         expect(placement.floor).to.be.an('object');
+        expect(placement.gpid).to.be.an('string');
       }
     });
     it('Returns empty data if no valid requests are passed', function () {
@@ -135,7 +143,7 @@ describe('ColossussspAdapter', function () {
 
   describe('interpretResponse', function () {
     let resObject = {
-      body: [ {
+      body: [{
         requestId: '123',
         mediaType: 'banner',
         cpm: 0.3,
@@ -150,7 +158,7 @@ describe('ColossussspAdapter', function () {
           advertiserDomains: ['google.com'],
           advertiserId: 1234
         }
-      } ]
+      }]
     };
     let serverResponses = spec.interpretResponse(resObject);
     it('Returns an array of valid server responses if response object is valid', function () {