apt-get update Not Seeing New Package Version in Private Debian Repository
A company maintains a private Debian repository for internal packages. A new package 'internal-tool' version 2.0 has been added to the repository, but when users run 'apt-get update && apt-get install internal-tool', the old version 1.0 is still being offered. What is the most likely cause?
Quick Answer
The answer is that the repository's Release file has not been regenerated after adding the new package. APT relies on the Release file to verify the current state of the repository’s metadata; when you run apt-get update, it downloads this file to learn which package versions are available. If the Release file still references the old metadata for version 1.0, APT will not see the new version 2.0, even though the .deb file is physically present. On the LPIC-1 exam, this tests your understanding of APT’s repository structure and the critical role of metadata files in package management—a common trap is assuming that simply copying a package file into the pool directory is enough. Remember the mnemonic: “No Release, no peace”—without a regenerated Release file, APT remains stuck on the old version.
⚠ Common exam trap
It's easy for candidates to assume the problem is with the local client cache (option B) or network issues (option C), when the real issue is a server-side metadata synchronization failure that prevents APT from discovering the new package version.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The repository's Release file has not been regenerated after adding the new package
The most likely cause is that the repository's Release file has not been regenerated after adding the new package. APT relies on the Release file (and its associated InRelease or Release.gpg) to obtain the current package metadata, including version information. If the Release file is not updated to reflect the new package version 2.0, APT will still see the old metadata and offer version 1.0, even though the package file exists in the repository.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The package version number is not higher than the installed version
Why it's wrong here
Version 2.0 > 1.0.
- ✗
The local apt cache needs to be cleared with 'apt-get clean'
Why it's wrong here
clean removes .deb files, not the package index.
- ✗
The 'apt-get update' command did not run successfully due to network issues
Why it's wrong here
Network issues would produce an error message.
- ✓
The repository's Release file has not been regenerated after adding the new package
Why this is correct
apt uses the Release file to check validity; if outdated, it may ignore new Packages files.
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Same concept, more angles
1 more way this is tested on LPIC-1
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which THREE of the following are valid methods to install a package from a local .deb file?
hard- A.alien -i package.deb
- B.rpm -i package.deb
- ✓ C.gdebi package.deb
- ✓ D.dpkg -i package.deb
- ✓ E.apt-get install ./package.deb
Why C: C is correct because `gdebi` is a dedicated tool for installing local `.deb` packages while automatically resolving and fetching their dependencies from configured repositories. It provides a safer alternative to `dpkg` when dependency handling is required.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-1 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-1 exam.