Apache Airflow 3.3 End of Life: Superseded by 3.4 on November 6, 2026
Apache Airflow 3.3 stopped receiving fixes on November 6, 2026, the day Airflow 3.4.0 was released. The Airflow project announced 3.4.0 on November 6, 2026. Its supported-versions table tracks support by major version: the 3 line is in Maintenance, and the current minor release of that line is 3.4. Patch releases now come from 3.4, so a deployment that stays on 3.3 gets no further fixes. Airflow 3.3 was first released on July 6, 2026.
What the supported-versions table says
| Airflow line | State | Limited maintenance | EOL |
|---|---|---|---|
| 3 (current minor: 3.4) | Maintenance | TBD | TBD |
| 2 | EOL | October 22, 2025 | April 22, 2026 |
The table defines the two states that come after Maintenance: limited support versions "will be supported with security and critical bug fixes only", and EOL versions "will not get any fixes or support". Inside a supported major line, fixes ship on the newest minor release; that is why 3.3 stops at the 3.4.0 release rather than at a date of its own. Every version is on the Apache Airflow page.
Security exposure
Airflow has two entries in CISA's Known Exploited Vulnerabilities catalog, both from 2020 and both about the 1.10 line: CVE-2020-11978 (command injection in an example DAG) and CVE-2020-13927 (the old Experimental API default that allowed unauthenticated requests). Neither is a reason to stay on 3.3. The reason to move is the general one: a 3.x issue found from now on is fixed in 3.4 and later, not in 3.3.
What to do
- Find every Airflow 3.3 deployment, including managed environments and container images pinned to a 3.3 tag.
- Read the 3.4.0 release notes (linked from the Airflow announcement) for breaking changes and provider requirements before upgrading.
- Upgrade to 3.4 and run the database migration (
airflow db migrate) as part of the upgrade, testing DAGs in a staging environment first. - Still on Airflow 2? It reached end of life on April 22, 2026; the move to 3.x is a major-version migration with its own upgrade guide.
Frequently Asked Questions
Is Apache Airflow 3.3 end of life?
Airflow 3.3 stopped receiving fixes when Airflow 3.4.0 was released on November 6, 2026. The Airflow project's supported-versions table tracks support by major version: the 3 line is in Maintenance and its current minor release is 3.4, so new fixes ship on 3.4.
Is Airflow 3 still supported?
Yes. The Airflow 3 line is in Maintenance in the project's supported-versions table, with Limited Maintenance and EOL dates still marked TBD. Support continues through the newest 3.x minor release.
When did Airflow 2 reach end of life?
The Airflow supported-versions table lists Airflow 2 as EOL: limited maintenance began October 22, 2025 and end of life was April 22, 2026. EOL versions get no fixes or support.
Related
- Apache Airflow — every version and its dates
- Python — version dates for the interpreter Airflow runs on
- Kubernetes — version dates for clusters running Airflow