diff --git a/Tools/environment_install/install-prereqs-windows.ps1 b/Tools/environment_install/install-prereqs-windows.ps1
index fe05e22bb39..d51954d50cb 100644
--- a/Tools/environment_install/install-prereqs-windows.ps1
+++ b/Tools/environment_install/install-prereqs-windows.ps1
@@ -14,10 +14,10 @@ Write-Output "Downloading ARM GCC Compiler 10-2020-Q4-Major (3/7)"
 Start-BitsTransfer -Source "https://firmware.ardupilot.org/Tools/STM32-tools/gcc-arm-none-eabi-10-2020-q4-major-win32.exe" -Destination "$PSScriptRoot\gcc-arm-none-eabi-10-2020-q4-major-win32.exe"
 
 Write-Output "Installing Cygwin x64 (4/7)"
-Start-Process -wait -FilePath $PSScriptRoot\setup-x86_64.exe -ArgumentList "--root=C:\cygwin64 --no-startmenu --local-package-dir=$env:USERPROFILE\Downloads --site=http://cygwin.mirror.constant.com --packages gcc-g++=13.4.0-1,git,make,libexpat-devel,libxml2-devel,python39,python39-lxml,python39-pip,libxslt-devel,python39-devel,procps-ng,zip,gdb,tmux --quiet-mode"
+Start-Process -wait -FilePath $PSScriptRoot\setup-x86_64.exe -ArgumentList "--root=C:\cygwin64 --no-startmenu --local-package-dir=$env:USERPROFILE\Downloads --site=http://cygwin.mirror.constant.com --packages gcc-g++=13.4.0-1,git,make,python312,python312-pip,procps-ng,zip,gdb,tmux --quiet-mode"
 
 Write-Output "Downloading extra Python packages (5/7)"
-Start-Process -wait -FilePath "C:\cygwin64\bin\bash" -ArgumentList "--login -i -c 'python3.9 -m pip install empy==3.3.4 pyserial intelhex dronecan pexpect'"
+Start-Process -wait -FilePath "C:\cygwin64\bin\bash" -ArgumentList "--login -i -c 'python3.12 -m pip install empy==3.3.4 pyserial intelhex dronecan pexpect'"
 
 Write-Output "Installing ARM GCC Compiler 10-2020-Q4-Major (6/7)"
 & $PSScriptRoot\gcc-arm-none-eabi-10-2020-q4-major-win32.exe /S /P /R