Not necessarily.
You might want to keep more cash than you are used to, as a precaution. Depending on your circumstances, you might want some precious metal coin, with the understanding that its purpose is to hold value over long periods of time, and not for speculation or dreams of quick profits (aside from occasional catch-up moments, the primary cause of precious metals going up in price, is debasement of the currency they are measured in--or in other words, inflation).
You might also want to store more dry food like flour, beans, rice, lentils, split peas, and that sort of thing, than you are probably used to.