diff --git a/modules/sparteoBidAdapter.js b/modules/sparteoBidAdapter.js
index 5649afd3946..2bb08707c85 100644
--- a/modules/sparteoBidAdapter.js
+++ b/modules/sparteoBidAdapter.js
@@ -24,12 +24,14 @@ const converter = ortbConverter({
   request(buildRequest, imps, bidderRequest, context) {
     const request = buildRequest(imps, bidderRequest, context);
 
+    deepSetValue(request, 'site.publisher.ext.params.pbjsVersion', '$prebid.version$');
+
     if (bidderRequest.bids[0].params.networkId) {
-      deepSetValue(request, 'site.publisher.ext.params.networkId', bidderRequest.bids[0].params.networkId);
+      request.site.publisher.ext.params.networkId = bidderRequest.bids[0].params.networkId;
     }
 
     if (bidderRequest.bids[0].params.publisherId) {
-      deepSetValue(request, 'site.publisher.ext.params.publisherId', bidderRequest.bids[0].params.publisherId);
+      request.site.publisher.ext.params.publisherId = bidderRequest.bids[0].params.publisherId;
     }
 
     return request;
diff --git a/test/spec/modules/sparteoBidAdapter_spec.js b/test/spec/modules/sparteoBidAdapter_spec.js
index e0b7349cb92..c83559175e6 100644
--- a/test/spec/modules/sparteoBidAdapter_spec.js
+++ b/test/spec/modules/sparteoBidAdapter_spec.js
@@ -81,7 +81,8 @@ const VALID_REQUEST_BANNER = {
       'publisher': {
         'ext': {
           'params': {
-            'networkId': '1234567a-eb1b-1fae-1d23-e1fbaef234cf'
+            'networkId': '1234567a-eb1b-1fae-1d23-e1fbaef234cf',
+            'pbjsVersion': '$prebid.version$'
           }
         }
       }
@@ -123,7 +124,8 @@ const VALID_REQUEST_VIDEO = {
       'publisher': {
         'ext': {
           'params': {
-            'networkId': '1234567a-eb1b-1fae-1d23-e1fbaef234cf'
+            'networkId': '1234567a-eb1b-1fae-1d23-e1fbaef234cf',
+            'pbjsVersion': '$prebid.version$'
           }
         }
       }
@@ -183,7 +185,8 @@ const VALID_REQUEST = {
       'publisher': {
         'ext': {
           'params': {
-            'networkId': '1234567a-eb1b-1fae-1d23-e1fbaef234cf'
+            'networkId': '1234567a-eb1b-1fae-1d23-e1fbaef234cf',
+            'pbjsVersion': '$prebid.version$'
           }
         }
       }