Backports Usage Guide

Debian Stable is known for its stability, but its software versions are relatively conservative. Backports is an official Debian compromise: it recompiles newer software from testing for the current stable release, allowing you to install individual newer packages on demand without leaving Stable.

For Debian 13, the corresponding repository is trixie-backports.

When to Use Backports

• ✅ You need a newer version of a specific software (e.g., a newer kernel to support new hardware, a newer LibreOffice).
• ✅ You want to keep the system overall stable and only upgrade individual packages.
• ❌ Do not install all packages as backports just to "have everything new" — that would undermine the stability advantage of Stable.

Software from Backports does not receive regular security support from the Debian Security Team, and its priority is lower than Stable. Install only what you need when you need it.

Enabling trixie-backports

Method 1: deb822 format (recommended)

Create /etc/apt/sources.list.d/trixie-backports.sources:

sudo tee /etc/apt/sources.list.d/trixie-backports.sources > /dev/null <<'EOF'
Types: deb
URIs: http://deb.debian.org/debian
Suites: trixie-backports
Components: main contrib non-free non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
EOF

sudo apt update

Method 2: Traditional one-line format

You can also add the Suites line directly to the official debian.sources file (e.g., Suites: trixie trixie-updates trixie-backports), or add the following to sources.list:

deb http://deb.debian.org/debian trixie-backports main contrib non-free non-free-firmware

For the differences between the two formats, see deb822 source format.

Installing Backported Software

After enabling, the default priority of backports is lower than Stable, so a normal apt install will not automatically install from backports. You must explicitly specify it with -t (--target-release):

# Install the latest LibreOffice from backports
sudo apt install -t trixie-backports libreoffice

# Install a newer kernel (useful for new hardware)
sudo apt install -t trixie-backports linux-image-amd64

Subsequent sudo apt upgrade will update already installed backports packages to newer versions in backports, while all other packages remain on Stable.

Fine Control with APT Pinning (Optional)

If you want certain packages to be installed from backports by default, create /etc/apt/preferences.d/backports:

# Make backports default priority lower than stable to avoid automatic upgrade of all packages
Package: *
Pin: release n=trixie-backports
Pin-Priority: 400

# Only let kernel-related packages be preferentially installed from backports (priority higher than stable's 500)
Package: linux-image-* linux-headers-*
Pin: release n=trixie-backports
Pin-Priority: 501

• Priority < 500: Only install with explicit -t.
• Priority > 500: Prefer backports version automatically.

Uninstalling and Rolling Back

Backported packages can be uninstalled like normal packages. To revert to the stable version, specify the version number or uninstall first and reinstall from stable:

sudo apt install <package-name>/trixie

Summary

• For Debian 13, use trixie-backports to get newer software while keeping the system stable.
• Installation requires apt install -t trixie-backports <package>; it will not auto-upgrade.
• Enable and install as needed; backports do not receive regular security support.

Further reading: deb822 source format · APT package management