# TimescaleDB — PostgreSQL extension compatibility with PostgreSQL major versions

For TimescaleDB, oldest postgresql version supported is 16; extension version this applies to is 2.29.0, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Extension:** TimescaleDB _(our reading, not quoted from the source)_
- **Oldest PostgreSQL version supported:** 16 _(our reading, not quoted from the source)_
- **Extension version this applies to:** 2.29.0 _(verified: appears in the quote below)_

## What the source says

> TimescaleDB 2.28.x is the final minor version to support PostgreSQL 15. Support for PostgreSQL 15 is dropped in 2.29.0; patch releases in the 2.28.x cycle continue to support it.

## Source

- https://docs.timescale.com/self-hosted/latest/upgrades/upgrade-pg/

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/).