Why has coverage been locked to `==4.0.3` for two years? Why not `>=4.0.0`?

If I add localstack to my pipenv, I can't lock because of this unnecessary dependency.
for entry in port_ranges)
    if services:
        port_mappings = ''
        for service, port in service_ports.items():
            port_mappings += ' -p {port}:{port}'.format(port=port)
    env_str = ''
    for env_var in config.CONFIG_ENV_VARS:
        value = os.environ.get(env_var, None)
        if value is not None:
            env_str += '-e %s="%s" ' % (env_var, value)
    data_dir_mount = ''
    data_dir = os.environ.get('DATA_DIR', None)
    if data_dir is not None:
        container_data_dir = '/tmp/localstack_data'
        data_dir_mount = '-v "%s:%s" ' % (data_dir, container_data_dir)
        env_str += '-e DATA_DIR="%s" ' % container_data_dir
    interactive = '' if force_noninteractive or in_ci() else '-it '
    
    entrypoint = '%s ' % entrypoint if entrypoint else entrypoint
    plugin_run_params = '%s ' % plugin_run_params if plugin_run_params else plugin_run_params
    docker_cmd = ('docker run %s%s%s%s' +
        '-p 8080:8080 %s %s' +
        '-v "%s:/tmp/localstack" -v "%s:%s" ' +
        '-e DOCKER_HOST="unix://%s" ' +
        '-e HOST_TMP_FOLDER="%s" "%s" %s') % (
            interactive, entrypoint, env_str, plugin_run_params, port_mappings, data_dir_mount,
            config.TMP_FOLDER, config.DOCKER_SOCK, config.DOCKER_SOCK, config.DOCKER_SOCK,
            config.HOST_TMP_FOLDER, image_name, cmd
    )
    mkdir(config.TMP_FOLDER)