During February 2026, this developer integrated Apache HttpClient 5 into the langchain4j/langchain4j repository to enhance HTTP client capabilities within the project. The work involved updating the Java-based codebase and Maven configuration to support the new client, with a focus on robust handling of asynchronous HTTP requests. Unit and integration tests were revised to accommodate the new implementation, including adjustments to timeouts to ensure reliable test execution. Throughout the process, care was taken to maintain compatibility with existing APIs, avoiding breaking changes. This contribution demonstrates a methodical approach to HTTP client integration and comprehensive test coverage using Java and Maven.