--- a/Admin/Windows/Cygwin/Cygwin-Setup.bat Mon Jun 04 14:21:16 2018 +0200
+++ b/Admin/Windows/Cygwin/Cygwin-Setup.bat Mon Jun 04 21:57:38 2018 +0200
@@ -1,3 +1,3 @@
@echo off
-"%CD%\contrib\cygwin\isabelle\cygwin" --site http://isabelle.in.tum.de/cygwin_2017 --no-verify --only-site --local-package-dir "%TEMP%" --root "%CD%\contrib\cygwin"
+"%CD%\contrib\cygwin\isabelle\cygwin" --site https://isabelle.sketis.net/cygwin_2018 --no-verify --only-site --local-package-dir "%TEMP%" --root "%CD%\contrib\cygwin"