# Citus — PostgreSQL extension compatibility with PostgreSQL major versions

For Citus, oldest postgresql version supported is 16; newest postgresql version supported is 18; extension version this applies to is citus v14.0.0, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Extension:** Citus _(our reading, not quoted from the source)_
- **Oldest PostgreSQL version supported:** 16 _(our reading, not quoted from the source)_
- **Newest PostgreSQL version supported:** 18 _(our reading, not quoted from the source)_
- **Extension version this applies to:** citus v14.0.0 _(verified: appears in the quote below)_

## What the source says

> ### citus v14.0.0 (February 9, 2026) ### * Drops PG15 support (#8372) * Adds support for PostgreSQL 18 (#8065)

## Source

- https://raw.githubusercontent.com/citusdata/citus/main/CHANGELOG.md

Last verified: 2026-09-14. Review by: 2026-12-29.
Part of [PostgreSQL extension compatibility with PostgreSQL major versions](https://referencesource.org/postgres-extension-postgresql-version-compatibility/).