📖 ~1 min read
Table of contents
Symptom & Impact
Critical updates are skipped because apt refuses to change held package versions.
Environment & Reproduction
Debian 13 servers with prior pinning policies or manual apt-mark hold usage.
Root Cause Analysis
Package hold flags or pin priorities block resolver decisions for dependent upgrades.
Quick Triage
List held packages and inspect apt preference files for restrictive pin values.
Step-by-Step Diagnosis
Simulate upgrade to identify blocking dependencies and held package chain.
Solution – Primary Fix
Unhold required packages, adjust pins, and run full-upgrade in a controlled window.
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Solution – Alternative Approaches
Upgrade only targeted packages first, then phase in broader distro updates.
Verification & Acceptance Criteria
No held package warnings remain and all security updates are installed.
Rollback Plan
Reapply hold flags for sensitive packages if compatibility tests fail.
Prevention & Hardening
Document approved package holds and review them during monthly patch cycles.
Related Errors & Cross-Refs
Related issues include kept back packages and unmet dependency loops.
Related tutorial: View the step-by-step tutorial for Debian 13.
View all Debian 13 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Debian apt preferences documentation and apt-mark manual page.
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