Thread:Project:Support desk/Make Special:Version only visible to Admins?

Hi all,

I'm using Mediwiki 1.21.1 and I like the fact that Special:Version is visible to everyone especially anon users. Is there any way to display this special page only to certain user groups like SysOps and bureaucrats? Maybe I'm dense but I haven't managed this yet via my $wgGroupPermissions and $wgRevokeAccess settings yet. Lockdown Extension didn't help. I don't want to block all Special Pages for users, only Special:Version.

Can anyone help or has an idea what I have done wrong?Thanks in advance.

these are my current permission settings in LocalSettings.php