Apache POI™ - Versioning

Apache POI™ releases are available under the Apache License, Version 2.0. from the Download page.

The versioning scheme for Apache POI is based on the principles of Semantic Versioning 2.0.0.

We started using this versioning scheme in Apache POI 4.0.0. Versions prior to this did not follow exactly the same principles with the numbers typically being of the form X.Y. X indicated the major version but there may in some cases, have been big changes between minor versions.

We typically only release new versions and don't usually patch old releases. We may consider patching old releases in exceptional circumstances. It is recommended to always use the latest version of Apache POI.