Common location of jenkins war file on ubuntu server is: cd /usr/share/jenkins/ Stop the jenkins server $ sudo service jenkins stop Move existing jenkins war file $ sudo mv jenkins.war jenkins.war.old Download latest/specific jenkins war file $ sudo wget https://updates.jenkins-ci.org/latest/jenkins.war # For latest $ sudo wget https://updates.jenkins-ci.org/download/war/2.222.4/jenkins.war # for 2.222.4 Start the Jenkins server $ sudo service jenkins start