win下安装Homestead遇到问题

在启动时

vagrant up

遇到问题powershell版本过低，要升级powershell。问题如下

Bringing machine 'homestead-7' up with 'virtualbox' provider...
The version of powershell currently installed on this host is less than
the required minimum version. Please upgrade the installed version of
powershell to the minimum required version and run the command again.
Installed version: 2
Minimum required version: 3

Installed version指你当前安装的版本，Minimum required version指最低要求的版本，去微软官网下载对应版本就可以啦。powershell：下载地址