diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e689739f..f68a634e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -58,11 +58,16 @@ jobs:
       - name: Build
         shell: pwsh
         run: |
+          # Intentionally excluding some preinstalled components that conflict with our
+          # ancient build tooling and dependencies: Git (due to sh.exe), cmake, mingw64, OpenSSL
+          #
           # Include Ruby and Powershell for unit tests
-          # Intentionally excluding Git (due to conflicting sh.exe) and
-          # OpenSSL as previously we were linking against the wrong OpenSSL
-          # DLLs.
-          $env:PATH = "C:\tools\pl-build-tools\bin;C:\tools\mingw64\bin;C:\ProgramData\chocolatey\bin;C:\Program Files\dotnet;C:\hostedtoolcache\windows\Ruby\2.5.9\x64\bin;C:\Program Files\7-Zip;C:\Windows\system32;C:\Windows;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Users\runneradmin\.dotnet\tools"
+          $oldpath = $env:PATH.Split(';')
+          $newpath = $oldpath | Where-Object { $_ -NotLike 'C:\Program Files\Git\*' -and $_ -NotLike 'C:\Program Files\CMake\*' -and $_ -NotLike 'C:\mingw64\*' -and $_ -NotLike 'C:\Program Files\OpenSSL\*' }
+          $diffpath = Compare-Object -ReferenceObject $oldpath -DifferenceObject $newpath -PassThru
+          Write-Output "Deleted: " $diffpath
+          $env:PATH = $newpath -Join ';'
+
           cmake -G "MinGW Makefiles" -DCMAKE_TOOLCHAIN_FILE="C:\tools\pl-build-tools\pl-build-toolchain.cmake" -DCMAKE_PREFIX_PATH="C:\tools\leatherman;C:\tools\cpp-pcp-client;C:\tools\cpp-hocon" -DCMAKE_INSTALL_PREFIX=C:\tools -DBOOST_STATIC=ON .
           mingw32-make install
       - name: Test