Semantic contextualism is often used in order to offer solutions for problems in other branches of philosophy, including epistemology. One of such attempts is epistemic contextualism, according to which the semantic value of the word "knows" changes with the context of its utterance. The aim of this paper is to critically investigate Keith DeRose’s contextualism, to see up to what extent does it provide avalid anti-sceptical strategy. Iargue that while it can be seen as agood rival for global and Ungerian scepticism, it does not lead to the refutation of other variants of classical scepticism.