from typing import List


def make_high_rcp_list(predicted_temps_dict: dict) -> List[float]:
    """Return a list of RCP 8.5 temperature values
    """
    high_rcp_list = []

    for year in list(predicted_temps_dict.keys()):
        high_rcp_list.append(predicted_temps_dict[year]['RCP 8.5'])

    return high_rcp_list