Set the Instant Pot to the Saute setting and add the olive oil. Once the olive oil is hot, add the onion, garlic, bell peppers, and celery. Cook for about 5 minutes, stirring occasionally.
Change the setting to Manual with high pressure and add the remaining ingredients. Seal the lid and set the timer to 15 minutes. Once the time is up, let the Instant Pot rest for 10 minutes before manually releasing the pressure. Ladle into serving bowls and enjoy!