Yevhenii Yarosh contributed to the linkerd/linkerd2 repository by improving the stability and correctness of Linkerd2’s Kubernetes Custom Resource Definitions. He identified and fixed an API version typo in the EgressNetwork and ExternalWorkload CRDs, addressing deployment misbehavior and ensuring compliance with Kubernetes specifications. Yevhenii updated and validated Helm charts to incorporate the fix, reducing deployment risk and strengthening upgrade paths for future releases. His work involved close attention to YAML syntax and Helm templating, with a focus on maintaining clear commit history and proper authorship. The depth of his contribution reflects careful engineering and a strong understanding of Kubernetes CRDs.