diff --git a/Build/build.ps1 b/Build/build.ps1
index e4c00000..a83c04d7 100644
--- a/Build/build.ps1
+++ b/Build/build.ps1
@@ -70,6 +70,8 @@ task Build -depends Clean {
 
       Write-Host
       Write-Host "Restoring"
+      [Environment]::SetEnvironmentVariable("EnableNuGetPackageRestore", "true", "Process")
+      exec { .\Tools\NuGet\NuGet.exe update -self }
       exec { .\Tools\NuGet\NuGet.exe restore ".\Src\$name.sln" | Out-Default } "Error restoring $name"
 
       Write-Host