diff --git a/modules/unrulyBidAdapter.js b/modules/unrulyBidAdapter.js
index 8fbbcf7d7c5..b825003f36f 100644
--- a/modules/unrulyBidAdapter.js
+++ b/modules/unrulyBidAdapter.js
@@ -80,7 +80,14 @@ const getRequests = (conf, validBidRequests, bidderRequest) => {
 
   Object.keys(requestBySiteId).forEach((key) => {
     let data = {
-      bidderRequest: Object.assign({}, {bids: requestBySiteId[key], invalidBidsCount, ...bidderRequestData})
+      bidderRequest: Object.assign({},
+        {
+          bids: requestBySiteId[key],
+          invalidBidsCount,
+          prebidVersion: '$prebid.version$',
+          ...bidderRequestData
+        }
+      )
     };
 
     request.push(Object.assign({}, {data, ...conf}));
diff --git a/test/spec/modules/unrulyBidAdapter_spec.js b/test/spec/modules/unrulyBidAdapter_spec.js
index f1f6517af67..abf1a54787d 100644
--- a/test/spec/modules/unrulyBidAdapter_spec.js
+++ b/test/spec/modules/unrulyBidAdapter_spec.js
@@ -517,7 +517,8 @@ describe('UnrulyAdapter', function () {
               'bidderRequestId': '12e00d17dff07b'
             }
           ],
-          'invalidBidsCount': 0
+          'invalidBidsCount': 0,
+          'prebidVersion': '$prebid.version$'
         }
       };
 
@@ -591,7 +592,8 @@ describe('UnrulyAdapter', function () {
               'bidderRequestId': '12e00d17dff07b',
             }
           ],
-          'invalidBidsCount': 0
+          'invalidBidsCount': 0,
+          'prebidVersion': '$prebid.version$'
         }
       };
 
@@ -682,7 +684,8 @@ describe('UnrulyAdapter', function () {
               'bidderRequestId': '12e00d17dff07b',
             }
           ],
-          'invalidBidsCount': 0
+          'invalidBidsCount': 0,
+          'prebidVersion': '$prebid.version$'
         }
       };
 
@@ -1095,7 +1098,7 @@ describe('UnrulyAdapter', function () {
                 'adUnitCode': 'video2',
                 'transactionId': 'a89619e3-137d-4cc5-9ed4-58a0b2a0bbc2',
                 'bidId': bidId,
-                'bidderRequestId': '12e00d17dff07b',
+                'bidderRequestId': '12e00d17dff07b'
               }
             ]
           }