Helm

v3.20.1Kubernetes Core

Mar 12, 2026

Helm v3.20.1 fixes two critical bugs affecting chart value handling and OCI registry operations that could cause deployment failures.

enhancementUpgrade immediately for value handling fixes
This patch resolves two bugs that could break chart deployments. The nil value preservation fix prevents unexpected behavior when overriding chart defaults, while the OCI tag+digest fix enables proper chart pulling from registries using both identifiers. Test your existing charts after upgrading to ensure value overrides work as expected.
enhancementVerify OCI chart references work properly
If you use OCI registries with tag+digest references (like `registry/chart:v1.0@sha256:abc123`), this release fixes previous 'invalid byte' errors. Update your CI/CD pipelines to use this version before relying on tag+digest combinations for chart immutability.

Key changes (4)

Fixed nil value preservation bug when charts have empty maps or no defaults for keys
Resolved OCI reference failures with tag+digest causing 'invalid byte' errors
Updated Kubernetes dependencies to latest versions
Added support for pulling charts from OCI indices