Lime Yogurt Pie

1 small box lime gelatin
2 (6 ounce) containers key lime pie yogurt
1 (8 ounce) container frozen whipped topping, thawed
1 (9-inch) graham cracker crust

In a bowl, combine gelatin powder and yogurt. Fold in whipped topping. Spread into crust. Refrigerate for at least 20 minutes before servings.

Yields 6 to 8 servings.