diff --git a/.github/workflows/copilot-setup-steps.yml b/.github/workflows/copilot-setup-steps.yml
index 3e4ba762e..3be1d4769 100644
--- a/.github/workflows/copilot-setup-steps.yml
+++ b/.github/workflows/copilot-setup-steps.yml
@@ -43,7 +43,7 @@ jobs:
       uses: ./.github/workflows/log-disk-space
 
     - name: Install Android workload
-      run: dotnet workload install android
+      run: dotnet workload install android --configfile NuGet.config
 
     - name: Log disk space (after Android workload)
       uses: ./.github/workflows/log-disk-space
diff --git a/build/ci/setup-environment.yml b/build/ci/setup-environment.yml
index a129873a6..8cff59cd8 100644
--- a/build/ci/setup-environment.yml
+++ b/build/ci/setup-environment.yml
@@ -26,7 +26,7 @@ steps:
     ignoreLASTEXITCODE: true
 
   - pwsh: |    
-      dotnet workload install maui-android android --verbosity diag --source $(dotnetWorkloadSource)
+      dotnet workload install maui-android android --verbosity diag --configfile NuGet.config
       if ($LASTEXITCODE -ne 0) {
           Write-Host "##vso[task.logissue type=error]Failed to install workloads."
           Write-Host "##vso[task.complete result=Failed;]"
diff --git a/build/ci/variables.yml b/build/ci/variables.yml
index d63f5d1fc..638d78609 100644
--- a/build/ci/variables.yml
+++ b/build/ci/variables.yml
@@ -21,7 +21,6 @@ variables:
   # Tool variables
   dotnetVersion: '10.x'                                                                 # .NET version to install on agent
   dotnetFrameworkVersion: 9                                                             # The number to use for TF (eg: netX.0-android)
-  dotnetWorkloadSource: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json' # NuGet source for workloads
 
   # Standard test variables
   standardTestProject: tests/allpackages/AllPackagesTests.csproj                                                      # Standard tests project file
diff --git a/nuget-diff.cake b/nuget-diff.cake
index 514a16b1f..6326b10d2 100644
--- a/nuget-diff.cake
+++ b/nuget-diff.cake
@@ -5,6 +5,13 @@ var ROOT_DIR = MakeAbsolute((DirectoryPath)Argument("root", "."));
 var ARTIFACTS_DIR = MakeAbsolute((DirectoryPath)Argument("artifacts", ROOT_DIR.Combine("output").FullPath));
 var CACHE_DIR = MakeAbsolute((DirectoryPath)Argument("cache", ROOT_DIR.Combine("externals/api-diff").FullPath));
 var OUTPUT_DIR = MakeAbsolute((DirectoryPath)Argument("output", ROOT_DIR.Combine("output/api-diff").FullPath));
+var NUGET_SOURCE = XmlPeek(
+	ROOT_DIR.CombineWithFilePath("NuGet.config"),
+	"/configuration/packageSources/add[@key='dotnet-public']/@value");
+
+if (string.IsNullOrWhiteSpace(NUGET_SOURCE)) {
+	throw new Exception("The dotnet-public package source was not found in NuGet.config.");
+}
 
 
 // SECTION: Main Script
@@ -44,6 +51,7 @@ if (!nupkgs.Any()) {
 				.Append("--group-ids")
 				.Append("--ignore-unchanged")
 				.Append("--compare-nuget-structure")
+				.AppendSwitch("--source", "=", NUGET_SOURCE)
 				.AppendSwitchQuoted("--output", OUTPUT_DIR.FullPath)
 				.AppendSwitchQuoted("--cache", CACHE_DIR.Combine("package-cache").FullPath)
 		});