diff --git a/build.cake b/build.cake
index 57acd7017..6b3e2d41b 100755
--- a/build.cake
+++ b/build.cake
@@ -7,6 +7,7 @@
 #addin nuget:?package=SharpZipLib&version=1.4.2
 
 // Imported scripts
+#load "build/cake/nuget-install.cake"
 #load "build/cake/setup-environment.cake"
 #load "build/cake/update-config.cake"
 #load "build/cake/tests.cake"
@@ -43,6 +44,8 @@ Information ($"BUILD_COMMIT         : {BUILD_COMMIT}");
 Information ($"BUILD_NUMBER         : {BUILD_NUMBER}");
 Information ($"BUILD_TIMESTAMP      : {BUILD_TIMESTAMP}");
 
+RunTarget("nuget-install");
+
 Task ("packages")
     .IsDependentOn ("binderate")
     .IsDependentOn ("nuget");
diff --git a/build/cake/binderate.cake b/build/cake/binderate.cake
index b355bdf51..3f3cdf7f7 100644
--- a/build/cake/binderate.cake
+++ b/build/cake/binderate.cake
@@ -10,6 +10,8 @@ Task ("binderate")
     var configFile = MakeAbsolute (new FilePath ("./config.json")).FullPath;
     var basePath = MakeAbsolute (new DirectoryPath ("./")).FullPath;
 
+    EnsureDirectoryExists ("./output");
+    
     // Run the binderator project
     var args = new ProcessArgumentBuilder ()
         .Append ("binderate")
diff --git a/build/cake/build-and-package.cake b/build/cake/build-and-package.cake
index 0e372ab6a..0031fd5c0 100644
--- a/build/cake/build-and-package.cake
+++ b/build/cake/build-and-package.cake
@@ -18,6 +18,12 @@ Task ("nuget")
         "./generated/AndroidX.sln", 
         new DotNetBuildSettings { MSBuildSettings = settings }
     );
+
+    // validation fails on CI if the package is in the output directory
+    DeleteFile ($"./output/cliwrap.3.8.2.nupkg");
+    DeleteFile ($"./output/holisticware.core.net.http.0.0.4.nupkg");
+    DeleteFile ($"./output/holisticware.core.io.0.0.4.nupkg");
+    DeleteFile ($"./output/holisticware.xamarin.tools.componentgovernance.0.0.1.4.nupkg");
 });
 
 // Builds the .csproj projects
diff --git a/build/cake/nuget-install.cake b/build/cake/nuget-install.cake
new file mode 100644
index 000000000..5de8d37db
--- /dev/null
+++ b/build/cake/nuget-install.cake
@@ -0,0 +1,97 @@
+/*
+Nuget download
+
+https://www.nuget.org/api/v2/package/{packageID}/
+
+
+https://api.nuget.org/v3/index.json?package=CliWrap&version=3.8.2
+https://api.nuget.org/v3-flatcontainer/cliwrap/3.8.2/cliwrap.3.8.2.nupkg
+    },
+https://www.nuget.org/api/v2/package/cake.coreclr/1.3.0/
+
+*/
+/*
+#addin nuget:https://api.nuget.org/v3/index.json?package=Mono.Cecil&version=0.11.6
+#addin nuget:https://api.nuget.org/v3/index.json?package=HolisticWare.Xamarin.Tools.ComponentGovernance&version=0.0.1.4
+#addin nuget:https://api.nuget.org/v3/index.json?package=HolisticWare.Core.Net.HTTP&version=0.0.4
+#addin nuget:https://api.nuget.org/v3/index.json?package=HolisticWare.Core.IO&version=0.0.4
+*/
+
+Dictionary<string, string> nuget_packages = new ()
+{
+    // { "cake.coreclr", "1.3.0" }
+    { "HolisticWare.Xamarin.Tools.ComponentGovernance", "0.0.1.4" },
+    { "HolisticWare.Core.Net.HTTP", "0.0.4" },
+    { "HolisticWare.Core.IO", "0.0.4" },
+};
+
+Task("nuget-install")
+    .Does
+    (
+        () =>
+        {
+            EnsureDirectoryExists("./output");
+
+            /*
+            nuget.exe must be in the PATH
+            NuGetInstall
+                    (
+                        "HolisticWare.Xamarin.Tools.ComponentGovernance", 
+                        new NuGetInstallSettings 
+                            {
+                                Version = "0.0.1.4",
+                                OutputDirectory = "./tools/Addins"
+                                }
+                    );
+            NuGetInstall
+                    (
+                        "HolisticWare.Core.Net.HTTP", 
+                        new NuGetInstallSettings 
+                            {
+                                Version = "0.0.4",
+                                OutputDirectory = "./tools/Addins"
+                            }
+                    );
+            NuGetInstall
+                    (
+                        "HolisticWare.Core.IO", 
+                        new NuGetInstallSettings 
+                            {
+                                Version = "0.0.4",
+                                OutputDirectory = "./tools/Addins"
+                            }
+                    );
+            NuGetInstall
+                    (
+                        "CliWrap", 
+                        new NuGetInstallSettings 
+                            {
+                                Version = "3.8.2",
+                                OutputDirectory = "./tools/Addins"
+                            }
+                    );
+            */
+            DownloadFile
+                    (
+                        "https://api.nuget.org/v3-flatcontainer/cliwrap/3.8.2/cliwrap.3.8.2.nupkg", 
+                        $"./output/cliwrap.3.8.2.nupkg"
+                    );
+            DownloadFile
+                    (
+                        "https://api.nuget.org/v3-flatcontainer/holisticware.core.net.http/0.0.4/holisticware.core.net.http.0.0.4.nupkg", 
+                        $"./output/holisticware.core.net.http.0.0.4.nupkg"
+                    );
+            DownloadFile
+                    (
+                        "https://api.nuget.org/v3-flatcontainer/holisticware.core.io/0.0.4/holisticware.core.io.0.0.4.nupkg", 
+                        $"./output/holisticware.core.io.0.0.4.nupkg"
+                    );
+            DownloadFile
+                    (
+                        "https://api.nuget.org/v3-flatcontainer/holisticware.xamarin.tools.componentgovernance/0.0.1.4/holisticware.xamarin.tools.componentgovernance.0.0.1.4.nupkg", 
+                        $"./output/holisticware.xamarin.tools.componentgovernance.0.0.1.4.nupkg"
+                    );
+            /*
+            */
+        }
+    );
diff --git a/tests/common/NuGet.config b/tests/common/NuGet.config
index 4021ec78f..dc9a1b349 100644
--- a/tests/common/NuGet.config
+++ b/tests/common/NuGet.config
@@ -3,8 +3,29 @@
     <packageSources>
         <clear />
         <add key="Local Output" value="../output" />
-        <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+        <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
+        <!--  Begin: Package sources from dotnet-android -->
+        <add key="darc-pub-dotnet-android-e7876a4" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-android-e7876a4f/nuget/v3/index.json" />
+        <add key="darc-pub-dotnet-android-82d8938" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-android-82d8938c/nuget/v3/index.json" />
+        <!--  End: Package sources from dotnet-android -->
+        <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
+        <!-- ensure only the sources defined below are used -->
+        <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" protocolVersion="3" />
+        <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" protocolVersion="3" />
+        <!-- This is for packages needed by debugger-libs -->
+        <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
+        <add key="dotnet9" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9/nuget/v3/index.json" />
+        <add key="dotnet9-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9-transport/nuget/v3/index.json" />
+        <add key="dotnet10" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet10/nuget/v3/index.json" />
+        <add key="dotnet10-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet10-transport/nuget/v3/index.json" />
+        <!-- This is needed (currently) for the Xamarin.Android.Deploy.Installer dependency, getting the installer -->
+        <!-- Android binary, to support delta APK install -->
+        <add key="xamarin.android util" value="https://pkgs.dev.azure.com/xamarin/public/_packaging/Xamarin.Android/nuget/v3/index.json" />
+        <!-- Added manually for dotnet/runtime 8.0.11 -->
+        <add key="darc-pub-dotnet-emsdk-91b783e" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-91b783ed/nuget/v3/index.json" />
+        <add key="darc-pub-dotnet-runtime-ef07c4f" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-ef07c4f2/nuget/v3/index.json" />
     </packageSources>
+    <disabledPackageSources />
     
     <!--
         https://docs.microsoft.com/en-us/nuget/consume-packages/package-source-mapping
diff --git a/utilities.cake b/utilities.cake
index c3b6f29cf..8da480fce 100644
--- a/utilities.cake
+++ b/utilities.cake
@@ -1,18 +1,27 @@
+/*
 // debugging prerequisity
 #tool nuget:?package=Cake.CoreCLR
+*/
 /*
      dotnet cake spell-check.cake
     dotnet cake spell-check.cake -t=spell-check
  */
-#addin nuget:?package=WeCantSpell.Hunspell&version=5.0.0
+#addin nuget:?package=WeCantSpell.Hunspell&version=6.0.0
 #addin nuget:?package=Newtonsoft.Json&version=13.0.3
 #addin nuget:?package=Cake.FileHelpers&version=7.0.0
-#addin nuget:?package=Mono.Cecil&version=0.11.5
+#addin nuget:?package=Mono.Cecil&version=0.11.6
 
 #addin nuget:?package=HolisticWare.Xamarin.Tools.ComponentGovernance&version=0.0.1.4
 #addin nuget:?package=HolisticWare.Core.Net.HTTP&version=0.0.4
 #addin nuget:?package=HolisticWare.Core.IO&version=0.0.4
 
+/*
+#addin nuget:https://api.nuget.org/v3/index.json?package=Mono.Cecil&version=0.11.6
+#addin nuget:https://api.nuget.org/v3/index.json?package=HolisticWare.Xamarin.Tools.ComponentGovernance&version=0.0.1.4
+#addin nuget:https://api.nuget.org/v3/index.json?package=HolisticWare.Core.Net.HTTP&version=0.0.4
+#addin nuget:https://api.nuget.org/v3/index.json?package=HolisticWare.Core.IO&version=0.0.4
+*/
+
 #load "build/cake/performance-timings.cake"
 
 using System.Collections.Generic;