Chase Wrenn argues that there are no epistemic duties. When it appears that we have an epistemic duty to believe, disbelieve or suspend judgement about some proposition P, we are really under a moral obligation to adopt the attitude towards P that our evidence favours. The argument appeals to theoretical parsimony: our conceptual scheme will be simpler without epistemic duties and we should therefore drop them. I argue that Wrenn’s strategy is flawed. There may well be things that we ought to do on epistemic grounds alone.