diff --git a/modules/gumgumBidAdapter.js b/modules/gumgumBidAdapter.js
index c9bf77494cf..2b0f7e03d22 100644
--- a/modules/gumgumBidAdapter.js
+++ b/modules/gumgumBidAdapter.js
@@ -273,6 +273,10 @@ function buildRequests (validBidRequests, bidderRequest) {
       data.iriscat = params.iriscat;
     }
 
+    if (params.irisid && typeof params.irisid === 'string') {
+      data.irisid = params.irisid;
+    }
+
     if (params.zone || params.pubId) {
       params.zone ? (data.t = params.zone) : (data.pubId = params.pubId);
 
diff --git a/test/spec/modules/gumgumBidAdapter_spec.js b/test/spec/modules/gumgumBidAdapter_spec.js
index a2a1b733d3c..0d37c8b1d25 100644
--- a/test/spec/modules/gumgumBidAdapter_spec.js
+++ b/test/spec/modules/gumgumBidAdapter_spec.js
@@ -1,7 +1,8 @@
+import { BANNER, VIDEO } from 'src/mediaTypes.js';
+
 import { expect } from 'chai';
 import { newBidder } from 'src/adapters/bidderFactory.js';
 import { spec } from 'modules/gumgumBidAdapter.js';
-import { BANNER, VIDEO } from 'src/mediaTypes.js';
 
 const ENDPOINT = 'https://g2.gumgum.com/hbid/imp';
 const JCSI = { t: 0, rq: 8, pbv: '$prebid.version$' }
@@ -158,6 +159,36 @@ describe('gumgumAdapter', function () {
       expect(bidRequest.data.t).to.equal(zoneParam.zone);
     });
 
+    it('should set the iriscat param when found', function () {
+      const request = { ...bidRequests[0], params: { iriscat: 'abc123' } }
+      const bidRequest = spec.buildRequests([request])[0];
+      expect(bidRequest.data).to.have.property('iriscat');
+    });
+
+    it('should not set the iriscat param when not found', function () {
+      const request = { ...bidRequests[0] }
+      const bidRequest = spec.buildRequests([request])[0];
+      expect(bidRequest.data).to.not.have.property('iriscat');
+    });
+
+    it('should set the irisid param when found', function () {
+      const request = { ...bidRequests[0], params: { irisid: 'abc123' } }
+      const bidRequest = spec.buildRequests([request])[0];
+      expect(bidRequest.data).to.have.property('irisid');
+    });
+
+    it('should not set the irisid param when not found', function () {
+      const request = { ...bidRequests[0] }
+      const bidRequest = spec.buildRequests([request])[0];
+      expect(bidRequest.data).to.not.have.property('irisid');
+    });
+
+    it('should not set the irisid param when not of type string', function () {
+      const request = { ...bidRequests[0], params: { irisid: 123456 } }
+      const bidRequest = spec.buildRequests([request])[0];
+      expect(bidRequest.data).to.not.have.property('irisid');
+    });
+
     describe('product id', function () {
       it('should set the correct pi param if native param is found', function () {
         const request = { ...bidRequests[0], params: { ...zoneParam, native: 2 } };