diff --git a/NuGet.config b/NuGet.config
index 4017b7ad58..90ce61307f 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
+    <clear />
     <add key="AspNetCore" value="https://dotnet.myget.org/F/aspnetcore-master/api/v3/index.json" />
     <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
   </packageSources>