diff --git a/VAST 4.1 Samples/Conditional_Ad-test.xml b/VAST 4.1 Samples/Conditional_Ad-test.xml
index f0faeaa..6503dee 100644
--- a/VAST 4.1 Samples/Conditional_Ad-test.xml	
+++ b/VAST 4.1 Samples/Conditional_Ad-test.xml	
@@ -1,7 +1,7 @@
 <VAST version="4.1" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.iab.com/VAST">
   <Ad id="20002" sequence="1" conditionalAd="true">
     <InLine>
-      <AdSystem version="4.0">iabtechlab</AdSystem>
+      <AdSystem version="4.1">iabtechlab</AdSystem>
       <Error><![CDATA[https://example.com/error]]></Error>
       <Extensions>
         <Extension type="iab-Count">