Hi Michael, so the following worked mostly:
<dependency> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> <version>5.7.0</version> </dependency> but if properly failed in the end with: [ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:3.1.0:clean (default-clean) on project jdo: Failed to clean project: Failed to delete C:\work\github\db-jdo\tck.txt -> [Help 1] I usually get that as a warning, not as an error. But it may also something wrong with my set-up. Cheers, Til