Changelog

📣 Important API update coming September 3rd

We’re introducing multi-source databases to Notion! Our new API version 2025-09-03 separates “databases” (containers) from “data sources” (tables), unlocking powerful new organizational capabilities.

What you need to know

• Current integrations continue working with single-source databases
• Update to the new API version to support multi-source databases
• We’re introducing the concept of API versioning to integration webhooks as well

Start upgrading your integrations now to ensure a smooth transition when users begin creating additional data sources starting from September 3rd.

Full details and migration guide: Upgrading to 2025-09-03

General information about API versioning: Versioning