Upgraded install has postfix and dkim wanting same port

On my upgraded install, both dkimproxy_in and postfix both want to listen on port 10025

dkimproxy_in.conf:
# specify what address/port DKIMproxy should listen on
listen    127.0.0.1:10025

# specify what address/port DKIMproxy forwards mail to
relay     127.0.0.1:10029

master.cf:
127.0.0.1:10025 inet n  -       -       -       -  smtpd
    -o content_filter=
    -o local_recipient_maps=
    -o relay_recipient_maps=
    -o smtpd_restriction_classes=
    …

This may be because dkimproxy was installed after dtc because of the missing depends in the debian package.