Argo CD v3.5.0 released on 04-08-2026
Argo CD v3.5.0 is out now. Improved supply‑chain security (signed images and provenance) plus ApplicationSet, Source Hydrator and UI upgrades target reliability and scale for teams running many applications.
Install and upgrade instructions, the v3.5.0 manifests and the full changelog are available on the project pages — check the install manifests under the v3.5.0 tag and the release notes for verification steps and details.
What’s in this release
- Quick start and install manifests for non‑HA and HA clusters (apply the v3.5.0 install.yaml or ha/install.yaml with server‑side apply and –force-conflicts).
- Supply‑chain hardening: all container images are signed with cosign and provenance for images and CLI binaries is produced to meet SLSA Level 3, with documentation for verification.
- Major features and UX work: ApplicationSet scalability and UX (concurrency, preview apps, AppSet visible in resource tree and support in any namespace), Source Hydrator promoted toward beta with opt‑in dry source integrity, and multiple UI, Helm and integration improvements (Helm 4 migration, wildcard valueFiles, mTLS in repo-server, GHCR webhook support, Azure DevOps SP auth, Gateway API support).
Upgrade notes
- If you are moving between minor versions, follow the official upgrading documentation before upgrading — read the upgrading guide on the project docs.
- Manifests for v3.5.0 are hosted under the v3.5.0 tag for reproducible installs; use those raw manifests if you need to reapply or recreate the release state.
Share your experience after upgrading — file issues or notes on the repo if you hit anything unexpected, or tell the community what worked well for you.
