Here's a brief survey of some folk remedies for keeping the dead quiet.
Bulgaria - iron stake through the left side of the chest PLUS removal of the lower left leg. Apparently it makes them tip over when they try to hop after you.
Bulgaria - bind the hands of the dead
Romania - remove the heart of the corpse
Italy - put a brick in the corpse's mouth so they can't feed
Poland - cut off the head and bury it between the legs.
Colonial America - bury the head in skull & crossbones position (not sure how you do that without complete dismemberment)
The source of these is a Daily Beast article, which is fitting as we're talking fantasy. [Trigger warning: Do not read the article if you are easily offended by incoherent grammar, fifth grade level factual mistakes (Thracian is the name for the historical inhabitants of Bulgaria, not the name of a city) and/or use of the word ancestors to describe descendants of people previously alive.]