If as a Monk I take the feat for proficiency with 4 more weapons, can I treat them as Monk weapons?

@Mighty_GrifoLittle clarification please. If as a Monk I take the feat for proficiency with 4 more weapons, can I treat them as Monk weapons? no, only if the weapons are specifically called out as monk weapons

— Mike Mearls (@mikemearls) April 27, 2016