If your company really doesn't engage in unfair employment practices, there's no point in adding a stupid whitelist (ahem) like "m/f/d" to your job description. It doesn't make you any more inclusive, it just makes you look like that.
If you really want to improve the status quo, work on your interview and candidate selection process. Make it transparent and specify clear selection criteria. Strip data like nationality, age, gender etc. from the CV as early as possible in the application phase.