Packages broken because of libdjvulibre21 and libdjvulibre15

[David <david.maillists@gmail.com>]

Hello,

Today's upgrades in sid broke my packages. djvulibre-bin was upgraded from 3.5.20-4 to 3.5.20-5. apt tried to install libdjvulibre21 as a dependency. libdjvulibre21 has common files with libdjvulibre15 (although no conflict is stated in the dependence list, so apt does not realise until the end).
 
As a result, djvulibre-bin is broken because libdjvulibre21 cannot be installed because of libdjvulibre15. But, on the other hand, if I try to remove libdjvulibre15, apt asks to remove a lot of essential packages.

Maybe these packages should be rebuilt against libdjvulibre21?

Thank you

Please Cc to me when replying