spinach dip

1 pkg frozen chopped spinach, drained and squeezed dry
1 pkg Knorr's vegetable soup mix
1 small can water chestnuts, chopped
1 1/2 cups sour cream
1 cup mayonnaise

Mix the sour cream and mayonnaise together in a bowl. Pour in the soup mix, water chestnuts and spinach. Mix thoroughly and refrigerate for at least four hours. Stir before serving.