diff -r 1a788101d63c -r 059f9e54d538 cygwin.rst
--- a/cygwin.rst	Sat Feb 18 14:02:20 2017 +0200
+++ b/cygwin.rst	Sat Feb 18 14:03:17 2017 +0200
@@ -86,6 +86,8 @@
 
   $ apt-cyg mirror http://mirrors.kernel.org/sources.redhat.com/cygwin/
 
+Just switching mirror does not update metadata.
+
 To change a location of directory where packages and ``setup.ini`` downloaded::
 
   $ apt-cyg cache