no libjson-c2

[CJPczk]

Trying to build the Debian package, running:
sudo mk-build-deps -i
results in an error "can't find libjson-c2"
Editing the file:
./debian/control
and replacing libjson-c2 with libjson-c5 allows mk-build-deps to complete without error, but I don't know if this will cause any other issues, and have not yet successfully built this debian package.