EXTJS: How can i upgrade my Sencha EXTJS 5.0.1 application to EXTJS 5.1.1 version?

I want to upgrade my current application which was built in EXTJS 5.0.1 version with Sencha CMD 5.0.1 . Can somebody please provide the exact steps needed to upgrade it to Sencha EXTJS 5.1.1 version ?

Thanks!