sudo apt install update-manager-core
sudo do-release-upgrade -d
Answer "Y" to all questiones asked.
After the upgrade, you need to run the following commands :
Remove the first
"# "
from /etc/apt/sources.list.d/evebox.list
Remove the first
"# "
from /etc/apt/sources.list.d/elastic-5.x.list
sudo update-java-alternatives -s java-1.8.0-openjdk-amd64
sudo systemctl enable logstash
sudo systemctl enable elasticsearch
sudo systemctl enable kibana
Then you can reboot your Croissants.
That's all! See you.