diff --git a/windows_cygwin/build.bat b/windows_cygwin/build.bat
deleted file mode 100644
index b53e4231..00000000
--- a/windows_cygwin/build.bat
+++ /dev/null
@@ -1,9 +0,0 @@
-REM install Chocolatey
-@powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin
-
-REM install base tools
-choco install firefox
-choco install googlechrome
-
-REM install cygwin and all things inside
-choco install cygwin cyg-get
diff --git a/windows_cygwin/build.ps1 b/windows_cygwin/build.ps1
new file mode 100755
index 00000000..2ee0a98a
--- /dev/null
+++ b/windows_cygwin/build.ps1
@@ -0,0 +1,9 @@
+# install Chocolatey
+iwr https://chocolatey.org/install.ps1 -UseBasicParsing | iex
+
+# install base tools
+choco install firefox
+choco install googlechrome
+
+# install cygwin and all things inside
+choco install cygwin cyg-get