diff --git a/TestAssets/TestPackages/NuGet.Config b/TestAssets/TestPackages/NuGet.Config
new file mode 100644
index 000000000..0750578cb
--- /dev/null
+++ b/TestAssets/TestPackages/NuGet.Config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <add key="testpackages" value="../../artifacts/testpackages/packages" />
+  </packageSources>
+</configuration>
diff --git a/build/Microsoft.DotNet.Cli.Test.targets b/build/Microsoft.DotNet.Cli.Test.targets
index 59ec2aae9..15744a5c3 100644
--- a/build/Microsoft.DotNet.Cli.Test.targets
+++ b/build/Microsoft.DotNet.Cli.Test.targets
@@ -97,7 +97,6 @@
     </PropertyGroup>
 
     <DotNetRestore ToolPath="$(Stage2Directory)"
-                   Source="$(TestPackagesDir)"
                    ConfigFile="$(RepoRoot)\NuGet.Config"
                    ProjectPath="%(TestPackageProject.ProjectPath)" />