Can't build on Gradle

[mmandrille]

Im trying to build my project with this package on Gradle to implement the client using:

compile "io.github.dzh:rdap-client:2019.3.16-SNAPSHOT"

But when I run the build command I get:

./gradlew build --refresh-dependencies
> Task :compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Could not resolve all files for configuration ':compileClasspath'.
   > Could not find io.github.dzh:rdap-client:2019.3.16-SNAPSHOT.
     Required by:
         project :

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.6.4/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 48s

Can you please tell me if im doing something wrong or if this package is not compatible with Gradle?