import re


def get_next_page(current_page):
    """Return next page based on current page url.

    Parameters
    ----------
    current_page : str
        Current page url.

    Returns
    -------
    str
    """
    regex = r"(?<=page=)\d+"
    next_page_number = str(int(*re.findall(regex, current_page)) + 1)
    return re.sub(regex, next_page_number, current_page)