Hi,

I've installed my current version using:

composer create-project silverstripe/installer ./my/website/folder 3.0.3

Is there any way to tell composer to download the 3.1 and upgrade the framework + CMS? I do not have any custom modules bar the standard CMS and unit testing.

.. nobody?

I think you should be able to change the "require" settings in the composer.json file in the root of your install. Something like:

"require": {
	"php": ">=5.3.2",
	"silverstripe/framework": "3.1.0",
	"silverstripe/cms": "3.1.0"
	...

then do composer update

Note: Make a backup first, and check Packagist for other versions you might want, like for instance 3.0.x-dev