diff --git a/UpdateDependencies.ps1 b/UpdateDependencies.ps1
new file mode 100644
index 000000000000..9ba785b05de7
--- /dev/null
+++ b/UpdateDependencies.ps1
@@ -0,0 +1,21 @@
+#
+# Copyright (c) .NET Foundation and contributors. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+#
+
+# This script initializes tools if necessary, then calls MSBuild using the
+# dotnet CLI. This allows Maestro to run auto-update targets without
+# encountering errors when contacting GitHub: .NET Core CLI supports TLS 1.2
+# by default, but full framework doesn't.
+
+$toolsLocalPath = Join-Path $PSScriptRoot "Tools"
+
+$initTools = Join-Path $PSScriptRoot "init-tools.cmd"
+& $initTools
+
+# Execute MSBuild using the dotnet.exe host
+$dotNetExe = Join-Path $toolsLocalPath "dotnetcli\dotnet.exe"
+$msbuildExe = Join-Path $toolsLocalPath "msbuild.exe"
+$testsBuildProj = Join-Path $PSScriptRoot "tests\build.proj"
+& $dotNetExe $msbuildExe $testsBuildProj /t:UpdateDependenciesAndSubmitPullRequest $args
+exit $LastExitCode