case string:to_integer(
    erlang:system_info(otp_release))
of
    {N, _} when N >= 26 ->
        {value, {dialyzer, DOpts}, Config} = lists:keytake(dialyzer, 1, CONFIG),
        {value, {warnings, Warnings}, OtherDOpts} = lists:keytake(warnings, 1, DOpts),
        [{dialyzer, [{warnings, [no_unknown | Warnings]} | OtherDOpts]} | Config];
    _ ->
        CONFIG
end.