The deliberative turn in political philosophy sees theorists attempting to ground democratic legitimacy in free, rational, and public deliberation among citizens. However, feminist theorists have criticized prominent accounts of deliberative democracy, and of the public sphere that is its site, for being too exclusionary. Iris Marion Young, Nancy Fraser, and Seyla Benhabib show that deliberative democrats generally fail to attend to substantive inclusion in their conceptions of deliberative space, even though they endorse formal inclusion. If we take these criticisms seriously, we are tasked with articulating a substantively inclusive account of deliberation. I argue in this article that enriching existing theories of deliberative democracy with Fricker's conception of epistemic in/justice yields two specific benefits. First, it enables us to detect instances of epistemic injustice, and therefore failures of inclusion, within deliberative spaces. Second, it can act as a model for constructing deliberative spaces that are more inclusive and therefore better able to ground democratic legitimacy.