Argo CD v3.4.1 released on 06-05-2026
Argo CD v3.4.1 is out now. It aligns Argo CD’s interpretation of Kubernetes cluster versions with Helm 3.19+ so teams using ApplicationSets and Helm charts avoid version-matching errors.
Read the Argo CD upgrade documentation and the GitHub release notes for full details, sample changes and verification steps: see the 3.3→3.4 upgrade guide and the full changelog.
What’s in this release
- Cluster version format change: cluster selectors must switch from argocd.argoproj.io/auto-label-cluster-info to argocd.argoproj.io/kubernetes-version and use the vMajor.Minor.Patch format to match Helm behaviour.
- ApplicationSet and UI improvements: ApplicationSet status now includes a Health field, plus new AppSet tree-view and list pages, slide-out summaries and improved application list filters (including annotation filtering and a clear-all button).
- Helm and hydrator updates: support for wildcard glob patterns in Helm valueFiles, custom User-Agent headers for Helm repo requests, and configurable hydrator author name/email for commits.
Upgrade notes
- Breaking change for ApplicationSets selecting by Kubernetes version — update cluster secrets to use argocd.argoproj.io/kubernetes-version in vMajor.Minor.Patch form; see the upgrade notes at https://argo-cd.readthedocs.io/en/stable/operator-manual/upgrading/3.3-3.4/#cluster-version-format-change for examples and verification steps.
- Rollback: if you need to revert, reinstall the prior Argo CD release from the project’s GitHub releases/tags and follow your standard rollback procedure.
Tell us how the upgrade went or report any unexpected behaviour — share your experience on the Argo CD GitHub issues or in the project discussion channels.
