1. In a large mixing bowl, combine rye flour, all-purpose flour, sugar, and salt.
2. In a separate bowl, mix warm water, olive oil, and yeast. Let it sit for 5 minutes.
3. Pour the yeast mixture into the flour mixture. Stir until a dough forms.
4. Knead the dough on a floured surface for about 10 minutes.
5. Place the dough in a greased bowl, cover, and let it rise for 1 hour.
6. Preheat the oven to 375°F (190°C).
7. Shape the dough into a loaf and place it on a baking sheet.
8. Bake for 30 minutes or until the bread sounds hollow when tapped.
9. Let the bread cool before slicing.