During June 2025, Dmitrii Shishliannikov developed Helm OCI registry self-signed CA support for the k0sproject/k0s repository, enabling secure installation of Helm extensions from OCI registries that use self-signed certificates. He implemented a mechanism allowing users to specify a CA certificate file for OCI registries, enhancing TLS handling for OCI transport and improving interoperability with diverse registry setups. Working primarily in Go, Dmitrii focused on robust certificate management and seamless integration with Helm extension workflows. This feature addressed a common pain point in Kubernetes environments by reducing setup friction and expanding compatibility for secure Helm extension deployments from OCI registries.