Show them the real added value. Don't tell them they are doing wrong: there is just this new thing that you do, that it could interest them. Grow your group mor

Show them the real added value. Don't tell them they are doing wrong: there is just this new thing that you do, that it could interest them. Grow your group more so that they have social confirmation. Make the colleagues appreciate the outcomes. Make a small company's own OSS "brand" by creating a social network account to give your group more visibility. Show them that it makes you happy and more productive. It's hard to convince others to change their ways and mindset, and it takes time. But it's worth. Sometimes it's impossible and you have to wait for someone else giving you the credit for the idea.