Nextflow and Fusion version compatibility
Each Nextflow release uses a default Fusion version. When Fusion is enabled and you do not specify a version, Nextflow resolves its default Fusion version at runtime from a release descriptor URL built into that Nextflow release.
Nextflow pins Fusion's minor version only (for example, 2.5), not a specific patch release. The newest available patch of that minor version is resolved at runtime from the release descriptor URL. This means the exact Fusion patch version used by the same Nextflow release can change as new Fusion patches are published.
To use a different Fusion version than the default, set the containerConfigUrl option in your Nextflow configuration. See Can I pin a specific Fusion version to use with Nextflow? for details.
Stable releases
| Nextflow version | Default Fusion version | Default containerConfigUrl |
|---|---|---|
| 26.10.0 – 26.10.2 | 2.6 | https://fusionfs.seqera.io/releases/v2.6-amd64.json |
| 26.04.0 – 26.04.7 | 2.5 | https://fusionfs.seqera.io/releases/v2.5-amd64.json |
| 24.10.0 – 25.10.8 | 2.4 | https://fusionfs.seqera.io/releases/v2.4-amd64.json |
| 24.04.0 – 24.04.6 | 2.3 | https://fusionfs.seqera.io/releases/v2.3-amd64.json |
| 23.10.0 – 23.10.4 | 2.2 | https://fusionfs.seqera.io/releases/v2.2-amd64.json |
| 23.04.0 – 23.04.5 | 2.1 | https://fusionfs.seqera.io/releases/v2.1-amd64.json |
For ARM CPU architectures, replace amd64 with arm64 in the descriptor URL (for example, https://fusionfs.seqera.io/releases/v2.5-arm64.json).
Edge releases
| Nextflow version | Default Fusion version | Default containerConfigUrl |
|---|---|---|
| 26.05.0-edge – 26.09.2-edge | 2.6 | https://fusionfs.seqera.io/releases/v2.6-amd64.json |
| 25.11.0-edge – 26.03.4-edge | 2.5 | https://fusionfs.seqera.io/releases/v2.5-amd64.json |
| 25.03.0-edge – 25.09.2-edge | 2.4 | https://fusionfs.seqera.io/releases/v2.4-amd64.json |
| 25.01.0-edge – 25.02.3-edge | 2.5 | https://fusionfs.seqera.io/releases/v2.5-amd64.json |
| 24.06.0-edge – 24.12.0-edge | 2.4 | https://fusionfs.seqera.io/releases/v2.4-amd64.json |
| 24.05.0-edge | 2.3 | https://fusionfs.seqera.io/releases/v2.3-amd64.json |
| 23.05.0-edge – 24.04.0-edge | 2.2 | https://fusionfs.seqera.io/releases/v2.2-amd64.json |
| 23.02.0-edge – 23.03.0-edge | 2.1 | https://fusionfs.seqera.io/releases/v2.1-amd64.json |
See also
- Seqera Platform default version compatibility — the Nextflow, Fusion, and Connect client versions used by each Seqera Platform release. Use that table when your Nextflow version is set by Seqera Platform's
nf-launcher; use the tables on this page when you run Nextflow directly and choose the version yourself.