This page describes Cloud SQL's database version support policies.
Database versions supported by Cloud SQL
The database engines supported by Cloud SQL include multiple versions. The versions can vary in capabilities and in the types of issues that arise. While performing an upgrade can impact your users, providing up-to-date database features and important patches is also critical. Cloud SQL keeps your instances up-to-date with patches and minor version updates automatically.
Major and minor versions supported by Cloud SQL
Cloud SQL supports the following database versions:
| Major version | Minor version | Regular support start date | Extended support start date | Deprecation date |
|---|---|---|---|---|
| PostgreSQL 15 (default) | 15.5 | May 24, 2023 | February 1, 2028 | February 1, 2031 |
| PostgreSQL 14 | 14.10 | November 11, 2021 | February 1, 2027 | February 1, 2030 |
| PostgreSQL 13 | 13.13 | November 5, 2020 | February 1, 2026 | February 1, 2029 |
| PostgreSQL 12 | 12.17 | May 21, 2020 | February 1, 2025 | February 1, 2028 |
| PostgreSQL 11 | 11.22 | September 27, 2019 | February 1, 2025 | February 1, 2028 |
| PostgreSQL 10 | 10.23 | March 27, 2020 | February 1, 2025 | February 1, 2028 |
| PostgreSQL 9.6 | 9.6.24 | April 1, 2018 | February 1, 2025 | February 1, 2028 |
Cloud SQL database version format
For PostgreSQL 9.6, the first two numbers in the version number form the major version, and the last number is the minor version. For example, for version 9.6.1, Cloud SQL uses 9.6 as the major version, and 1 as the minor version. For PostgreSQL 10 and later, the first number is the major version. For example, for version 10.1, 10 is the major version, and 1 is the minor version.
Major version lifecycle
This section describes the support lifecycle for major versions in Cloud SQL.
Regular support
Cloud SQL aims to support new major versions on the same day as their general availability release by the database engine developer community. The first phase of the support is called regular support. During regular support, Cloud SQL provides minor version updates for the database engine. Cloud SQL also applies security fixes to the instances. Cloud SQL offers regular support for a major version as long as the database engine developer community supports the major version. After the major version reaches end-of-life (EOL) by the community, the major version enters extended support in Cloud SQL.
Extended support
For Cloud SQL for PostgreSQL major versions that have reached their EOL, Cloud SQL offers extended support. Extended support lets you continue running your Cloud SQL instances for three years even after the developer community stops supporting the major versions on which the instances are running. Extended support is offered for three years. You can use this time to plan, test, and perform the upgrade of your instances to a major version that is in regular support. For more information about performing a major version upgrade, see Upgrade the database major version in-place and Upgrade the database major version by migrating data.
For more information about extended support, see Extended support in Cloud SQL.
Deprecation
After extended support has ended for a specific major version, Cloud SQL deprecates the major version. An instance running on a deprecated major version is upgraded to the default major and minor version for the database engine automatically. Cloud SQL sends a deprecation notice to project owners at least 12 months before the deprecation date.
For Cloud SQL for PostgreSQL major versions, project owners receive a deprecation notice at the end of the second year of extended support.
Minor version support
Cloud SQL aims to support new minor versions on the same day as their general availability release by the database engine developer community. After Cloud SQL supports a new minor version, Cloud SQL provisions new instances on the new version automatically. During the next scheduled maintenance rollout, Cloud SQL upgrades existing instances to the new version.
Cloud SQL determines the target minor version for each database engine. When the target minor version is different from the minor version for a Cloud SQL instance, Cloud SQL upgrades that version during the next maintenance cycle. You can control the day and time when maintenance restarts occur by setting a maintenance window for your instance.