Source-backed version compatibility
GitLab PostgreSQL Linux Package Fresh Install version compatibility. GitLab 19.3 introduces PostgreSQL 18.4 as an opt-in option for fresh Linux-package installations, alongside the…
Quick answer
Supported and tested versions have compatibility evidence. Recommended and bundled versions describe upstream choices without establishing compatibility. Versions outside the documented coverage are unknown, not necessarily incompatible.
Supported PostgreSQL Linux Package Fresh Install versions
GitLab 19.3 introduces PostgreSQL 18.4 as an opt-in option for fresh Linux-package installations, alongside the supported PostgreSQL 17 line.
Upgrading an existing installation to PostgreSQL 18.4 is explicitly not supported; this entry does not apply to the Helm chart or general external-database installations.
high confidence · verified 2026-09-11 · Linux package fresh-install database
Primary evidence
Every constraint above is backed by upstream documentation, tagged source, release notes, or another project-owned primary source.
compatibility.fyi