laravel/framework — pull request #4556 by daninoz (2014-06-02 22:48:21+00:00)
Title: [Bug Fix] $touch should be true by default in updateExistingPivot

Needed to be consistent with the other methods where $touch is already true by default, and also with the docs: http://laravel.com/docs/eloquent#working-with-pivot-tables