Combine flours, yeast, sea salt and warm water (like bath water, or 105°F or 40ºC) in a bowl and stir with a spoon or with your hands until you get a sticky rough dough. Depending of the flour you use, you maybe need to add more or less water, so I recommend you to add the water gently.
Place the dough in a bowl, cover with a dishcloth and let rise for 2 hours at room temperature.
Preheat the oven to 430ºF or 220ºC.
Line a loaf pan with parchment paper or grease it with oil (I usually use extra virgin olive oil or coconut oil). Place the dough into the loaf pan and slash the bread about 5 times with a knife. Add the pumpkin seeds and press with a spoon.
Bake for 25 minutes at 430ºF or 220ºC and 35 minutes at 350ºF or 175ºC.