diff --git a/modules/adyoulikeBidAdapter.js b/modules/adyoulikeBidAdapter.js
index f7473b3bad4..e6cdc7698bf 100644
--- a/modules/adyoulikeBidAdapter.js
+++ b/modules/adyoulikeBidAdapter.js
@@ -126,6 +126,8 @@ export const spec = {
       payload.userId = createEidsArray(bidderRequest.userId);
     }
 
+    payload.pbjs_version = '$prebid.version$';
+
     const data = JSON.stringify(payload);
     const options = {
       withCredentials: true
diff --git a/test/spec/modules/adyoulikeBidAdapter_spec.js b/test/spec/modules/adyoulikeBidAdapter_spec.js
index e6a153d501a..24cede20352 100644
--- a/test/spec/modules/adyoulikeBidAdapter_spec.js
+++ b/test/spec/modules/adyoulikeBidAdapter_spec.js
@@ -722,6 +722,7 @@ describe('Adyoulike Adapter', function () {
       expect(payload.Version).to.equal('1.0');
       expect(payload.Bids['bid_id_0'].PlacementID).to.be.equal('placement_0');
       expect(payload.PageRefreshed).to.equal(false);
+      expect(payload.pbjs_version).to.equal('$prebid.version$');
       expect(payload.Bids['bid_id_0'].TransactionID).to.be.equal('bid_id_0_transaction_id');
     });
 
@@ -736,6 +737,7 @@ describe('Adyoulike Adapter', function () {
       expect(payload.Version).to.equal('1.0');
       expect(payload.Bids['bid_id_0'].PlacementID).to.be.equal('placement_0');
       expect(payload.PageRefreshed).to.equal(false);
+      expect(payload.pbjs_version).to.equal('$prebid.version$');
       expect(payload.Bids['bid_id_0'].TransactionID).to.be.equal('bid_id_0_transaction_id');
     });
 
@@ -758,6 +760,7 @@ describe('Adyoulike Adapter', function () {
       expect(payload.Bids['bid_id_1'].TransactionID).to.be.equal('bid_id_1_transaction_id');
       expect(payload.Bids['bid_id_3'].TransactionID).to.be.equal('bid_id_3_transaction_id');
       expect(payload.PageRefreshed).to.equal(false);
+      expect(payload.pbjs_version).to.equal('$prebid.version$');
     });
 
     it('sends bid request to endpoint setted by parameters', function () {