diff --git a/nuget.config b/nuget.config
index e11fb240..3a7db007 100644
--- a/nuget.config
+++ b/nuget.config
@@ -2,6 +2,30 @@
 <configuration>
   <packageSources>
     <clear />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
     <add key="libman" value="https://pkgs.dev.azure.com/azure-public/vswebtools/_packaging/libman/nuget/v3/index.json" />
   </packageSources>
+  <packageSourceMapping>
+    <packageSource key="libman">
+      <package pattern="Microsoft.Extensions.CommandLineUtils.Sources" />
+      <package pattern="Microsoft.Test.Apex.*" />
+      <package pattern="Microsoft.VisualStudio.Internal.MicroBuild" />
+      <package pattern="Microsoft.WebTools.Languages.*" />
+    </packageSource>
+    <packageSource key="nuget.org">
+      <package pattern="Castle.Core" />
+      <package pattern="MessagePack" />
+      <package pattern="MessagePack.*" />
+      <package pattern="Microsoft.*" />
+      <package pattern="Moq*" />
+      <package pattern="MSTest.*" />
+      <package pattern="Newtonsoft.Json" />
+      <package pattern="Nerdbank.GitVersioning" />
+      <package pattern="Nerdbank.Streams" />
+      <package pattern="Nuget.Frameworks" />
+      <package pattern="Nuget.VisualStudio" />
+      <package pattern="StreamJsonRpc" />
+      <package pattern="System.*" />
+    </packageSource>
+  </packageSourceMapping>
 </configuration>