Add this attribute for formality, in case the API were to change

nuget.config

@@ -8,6 +8,6 @@
 
     <!--To inherit the global NuGet package sources remove the <clear/> line below -->
     <clear />
-    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
   </packageSources>
 </configuration>