/etc/apt/preferences :
Package: ttf-dejavu Pin: version 2.19-1ubuntu2 Pin-Priority: 1000
Package: ttf-dejavu-core Pin: version 2.19-1ubuntu2 Pin-Priority: 1000
Package: ttf-dejavu-extra Pin: version 2.19-1ubuntu2 Pin-Priority: 1000
Thanks again Mozilla.
/etc/apt/ preferences :
Package: ttf-dejavu
Pin: version 2.19-1ubuntu2
Pin-Priority: 1000
Package: ttf-dejavu-core
Pin: version 2.19-1ubuntu2
Pin-Priority: 1000
Package: ttf-dejavu-extra
Pin: version 2.19-1ubuntu2
Pin-Priority: 1000
Thanks again Mozilla.