Debian обновлен после тестирования неудовлетворенных зависимостей

я сделал огромную ошибку, используя репозиторий тестирования для обновления до python 3.8. Раньше я запускал растяжку, затем я обновился до buster, но теперь у меня есть эта проблема: могу ли я понизить версию пакета, который я обновил, чтобы исправить обновления (bc gettext nethogs nmon procps)?

Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  bc gettext nethogs nmon procps
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.


apt install bc
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libncurses6 : Depends: libtinfo6 (= 6.1+20181013-2+deb10u2) but 6.2-1 is to be installed
E: Unable to correct problems, you have held broken packages.