diff --git a/modules/ixBidAdapter.js b/modules/ixBidAdapter.js
index a2d690b18ee..6217cd107be 100644
--- a/modules/ixBidAdapter.js
+++ b/modules/ixBidAdapter.js
@@ -680,6 +680,7 @@ function buildRequest(validBidRequests, bidderRequest, impressions, version) {
 
     if (impressionObjects.length && BANNER in impressionObjects[0]) {
       const { id, banner: { topframe }, ext } = impressionObjects[0];
+      const gpid = impressions[transactionIds[adUnitIndex]].gpid;
       const _bannerImpression = {
         id,
         banner: {
@@ -688,10 +689,10 @@ function buildRequest(validBidRequests, bidderRequest, impressions, version) {
         },
       }
 
-      if (ext.dfp_ad_unit_code) {
-        _bannerImpression.ext = {
-          dfp_ad_unit_code: ext.dfp_ad_unit_code
-        }
+      if (ext.dfp_ad_unit_code || gpid) {
+        _bannerImpression.ext = {};
+        _bannerImpression.ext.dfp_ad_unit_code = ext.dfp_ad_unit_code;
+        _bannerImpression.ext.gpid = gpid;
       }
 
       if ('bidfloor' in impressionObjects[0]) {
@@ -911,6 +912,7 @@ function createBannerImps(validBidRequest, missingBannerSizes, bannerImps) {
       bannerImps[validBidRequest.transactionId].ixImps = []
     }
     bannerImps[validBidRequest.transactionId].ixImps.push(imp);
+    bannerImps[validBidRequest.transactionId].gpid = deepAccess(validBidRequest, 'ortb2Imp.ext.gpid');
   }
 
   if (ixConfig.hasOwnProperty('detectMissingSizes') && ixConfig.detectMissingSizes) {
diff --git a/test/spec/modules/ixBidAdapter_spec.js b/test/spec/modules/ixBidAdapter_spec.js
index af8e683de8b..c6579a544fa 100644
--- a/test/spec/modules/ixBidAdapter_spec.js
+++ b/test/spec/modules/ixBidAdapter_spec.js
@@ -4,6 +4,7 @@ import { expect } from 'chai';
 import { newBidder } from 'src/adapters/bidderFactory.js';
 import { spec, storage, ERROR_CODES } from '../../../modules/ixBidAdapter.js';
 import { createEidsArray } from 'modules/userId/eids.js';
+import { deepAccess } from '../../../src/utils.js';
 
 describe('IndexexchangeAdapter', function () {
   const IX_SECURE_ENDPOINT = 'https://htlb.casalemedia.com/cygnus';
@@ -1440,12 +1441,69 @@ describe('IndexexchangeAdapter', function () {
       expect(dfp_ad_unit_code).to.equal(AD_UNIT_CODE);
     });
 
+    it('should send gpid in request if ortb2Imp.ext.gpid exists', function () {
+      const GPID = '/19968336/some-adunit-path';
+      const validBids = utils.deepClone(DEFAULT_BANNER_VALID_BID);
+      validBids[0].ortb2Imp = {
+        ext: {
+          gpid: GPID
+        }
+      };
+      const requests = spec.buildRequests(validBids, DEFAULT_OPTION);
+      const { ext: { gpid } } = JSON.parse(requests[0].data.r).imp[0];
+      expect(gpid).to.equal(GPID);
+    });
+
     it('should not send dfp_adunit_code in request if ortb2Imp.ext.data.adserver.adslot does not exists', function () {
+      const GPID = '/19968336/some-adunit-path';
+      const validBids = utils.deepClone(DEFAULT_BANNER_VALID_BID);
+      validBids[0].ortb2Imp = {
+        ext: {
+          gpid: GPID
+        }
+      };
+      const requests = spec.buildRequests(validBids, DEFAULT_OPTION);
+      const imp = JSON.parse(requests[0].data.r).imp[0];
+      expect(deepAccess(imp, 'ext.dfp_ad_unit_code')).to.not.exist;
+    });
+
+    it('should not send gpid in request if ortb2Imp.ext.gpid does not exists', function () {
+      const AD_UNIT_CODE = '/19968336/some-adunit-path';
       const validBids = utils.deepClone(DEFAULT_BANNER_VALID_BID);
+      validBids[0].ortb2Imp = {
+        ext: {
+          data: {
+            adserver: {
+              name: 'gam',
+              adslot: AD_UNIT_CODE
+            }
+          }
+        }
+      };
       const requests = spec.buildRequests(validBids, DEFAULT_OPTION);
-      const { ext } = JSON.parse(requests[0].data.r).imp[0];
+      const imp = JSON.parse(requests[0].data.r).imp[0];
+      expect(deepAccess(imp, 'ext.gpid')).to.not.exist;
+    });
 
-      expect(ext).to.not.exist;
+    it('should send gpid & dfp_adunit_code if they exist in ortb2Imp.ext', function () {
+      const AD_UNIT_CODE = '/1111/home';
+      const GPID = '/1111/home-left';
+      const validBids = utils.deepClone(DEFAULT_BANNER_VALID_BID);
+      validBids[0].ortb2Imp = {
+        ext: {
+          gpid: GPID,
+          data: {
+            adserver: {
+              name: 'gam',
+              adslot: AD_UNIT_CODE
+            }
+          }
+        }
+      };
+      const requests = spec.buildRequests(validBids, DEFAULT_OPTION);
+      const imp = JSON.parse(requests[0].data.r).imp[0];
+      expect(deepAccess(imp, 'ext.gpid')).to.equal(GPID);
+      expect(deepAccess(imp, 'ext.dfp_ad_unit_code')).to.equal(AD_UNIT_CODE);
     });
 
     it('payload should have correct format and value', function () {