If you want apt to update ONLY the Jenkins package (and not upgrade the whole system), use:

✅ 1. Update package index

You must always update sources first:

sudo apt update

✅ 2. Upgrade ONLY the Jenkins package

sudo apt install --only-upgrade jenkins

This will:

  • NOT install new packages
  • NOT update anything else
  • ONLY upgrade the jenkins package if an update exists

🔍 Check version afterwards:

dpkg -l | grep jenkins

📝 If Jenkins is installed via repo (recommended)

Make sure your /etc/apt/sources.list.d/jenkins.list is correct:

deb https://pkg.jenkins.io/debian-stable binary/

Then run the upgrade command above.

⛔ If you want to prevent other packages from upgrading

You can hold the rest:

sudo apt-mark hold '*'
sudo apt-mark unhold jenkins

But normally unnecessary — the --only-upgrade flag is enough.