This page explains maintenance changelogs and provides links to changelogs for each database version. Cloud SQL regularly updates the software on Cloud SQL instances through new maintenance versions. With new maintenance versions, Cloud SQL releases new features, security patches, bug fixes, performance improvements, and more. Your Cloud SQL instances are kept up-to-date with the latest maintenance version through self-service maintenance or through scheduled maintenance, which Cloud SQL performs once every few months. ## SQL Server maintenance changelogs - [SQL Server 2017 Enterprise maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2017-enterprise.md.txt) - [SQL Server 2017 Express maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2017-express.md.txt) - [SQL Server 2017 Standard maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2017-standard.md.txt) - [SQL Server 2017 Web maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2017-web.md.txt) - [SQL Server 2019 Enterprise maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2019-enterprise.md.txt) - [SQL Server 2019 Express maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2019-express.md.txt) - [SQL Server 2019 Standard maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2019-standard.md.txt) - [SQL Server 2019 Web maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2019-web.md.txt) - [SQL Server 2022 Enterprise maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2022-enterprise.md.txt) - [SQL Server 2022 Express maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2022-express.md.txt) - [SQL Server 2022 Standard maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2022-standard.md.txt) - [SQL Server 2022 Web maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2022-web.md.txt) - [SQL Server 2025 Enterprise maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2025-enterprise.md.txt) - [SQL Server 2025 Express maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2025-express.md.txt) - [SQL Server 2025 Standard maintenance changelog](https://docs.cloud.google.com/sql/docs/sqlserver/maintenance-changelog/sqlserver-2025-standard.md.txt)