The article delves into the deprecation of certain GitHub Actions workflow commands, specifically set-output, save-state, add-path, and set-env, due to security concerns. It explains the rationale behind these changes, highlighting the introduction of environment files as a more secure alternative for managing states, outputs, and environment variables in workflows. The article provides detailed instructions on how to update existing workflows to accommodate these changes, offering solutions for both workflow and action authors to resolve errors and warnings encountered due to these deprecations. Additionally, it offers guidance on locating deprecated commands within workflow files using GitHub's search features and suggests using the sed command for bulk replacements. The piece underscores the importance of staying informed about GitHub’s updates to maintain workflow integrity and security.