Comment From: OlgaMaciaszek

Hello, @WuZhiMing2. SC OpenFeign 3.1.1 is part of Spring Cloud 2021.0.1, compatible with Spring Boot 2.6.7. SC OpenFeign 4.0.0-M2 is part of Spring Cloud 2022.0.0-M2, compatible with Spring Boot 3.0.0-M2. We do not recommend specifying versions of individual projects in build files - we suggest you use dependency management as described here instead. This site also contains Spring Cloud Release Train / Spring Boot mappings. However, the best place to generate correct Spring Cloud build file based on Spring Boot version is definitely https://start.spring.io/.