Update

Stable (LTS)

Unhold current version

sudo apt-mark unhold jenkins

Update jenkins

sudo apt install -y jenkins

Hold current version

sudo apt-mark hold jenkins

Weekly release

Stop service

sudo systemctl stop jenkins

Backup jenkins binary

cd /usr/share/java
sudo mv jenkins.war jenkins.war.old

Download latest release

cd /usr/share/java
sudo wget https://updates.jenkins-ci.org/latest/jenkins.war

Restart service

sudo systemctl restart jenkins