diff --git a/nuget.config b/nuget.config
index e11fb240..1f62946e 100644
--- a/nuget.config
+++ b/nuget.config
@@ -2,6 +2,22 @@
 <configuration>
   <packageSources>
     <clear />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
+    <add key="dotnet-myget-legacy" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/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="dotnet-public">
+      <package pattern="*" />
+    </packageSource>
+    <packageSource key="dotnet-myget-legacy">
+      <package pattern="Microsoft.Extensions.CommandLineUtils.Sources" />
+    </packageSource>
+    <packageSource key="libman">
+      <package pattern="Microsoft.Test.Apex.VisualStudio" />
+      <package pattern="Microsoft.VisualStudio.Internal.MicroBuild" />
+      <package pattern="Microsoft.WebTools.Languages.*" />
+    </packageSource>
+  </packageSourceMapping>
 </configuration>