Testing is an important aspect of software development, and software engineering students need to be educated in preparation for this. Unfortunately, it is not easy to excite students to write tests for the software they create. To better engage students with testing, we propose the use of Gamekins, a tool that integrates gamification in continuous integration to create more incentive for testing. Gamekins is integrated into the Jenkins continuous integration platform where game elements are based on commits to the source code repository: Developers can earn points for completing test challenges and quests posed by Gamekins, compete with other developers or developer teams on a leaderboard, and are rewarded for their test-related achievements. In this talk, we will demonstrate Gamekins, and share our experience of integrating it into undergraduate and graduate-level courses.