From mobile apps to microservices, from small startups to big enterprises, Gradle helps teams build, automate and deliver better software, faster.

Gradle Community

you can’t and shouldn’t want to have 2 versions of the same library on the classpath. This will lead to indeterminate behaviour.

I agree, but I can’t upgrade the dependency of third SDK
so the only way is to downgrade my dependency?

if that sdk truly can’t be upgraded, then yes

Well, you probably can with significant effort, separating things on different class loaders. But you proably don't want to, especially if you are not familiar with that.