Version Scheme

You are viewing the documentation for the latest Monix 3.x series.
Older versions: 2.x

The versioning scheme follows the Semantic Versioning (semver) specification, meaning stable versions have the form $major.$minor.$patch, such that:

  1. $major version updates make binary incompatible API changes
  2. $minor version updates adds functionality in a backwards-compatible manner, and
  3. $patch version updates makes backwards-compatible bug fixes


  • version 3.2.2 should only fix bugs from version 3.2.1, but shouldn’t introduce new features
  • version 3.2.0 should introduce features over version 3.1.0, features that are both binary and source compatible with the whole 3.x.x series
  • version 4.0.0, when it happens, can introduce source and binary backwards-incompatible changes

Intermediary Snapshots #

We also publish intermediary versions, automatically, whenever PRs get merged to main.

The project has a dynamic version setup (see sbt-dynver), releases are via GitHub Actions with versions such as 3.2.2+3-1234abcd, where 3.2.2 is the base version, +3 represents the number of commits, the distance from that base version, and 1234abcd represents the commit’s “sha” (hash) prefix, identifying the commit in GitHub.

We make NO GUARANTEES for these intermediary versions, but they are pretty high quality, they get published on Maven Central too (NOT on Sonatype’s snapshots, so these releases are not volatile), and you can depend on them for testing purposes, or if you really, really need a new feature that’s not published in a stable version yet.