Embodiments described herein are directed to computer-implemented methods, systems, and computer program products for regression testing. New techniques for software regression testing are provided in which the regression test scenarios are directly synchronized with the user's system and environment. This can be referred to as a customized-regression-test process. A non-limiting example of a computer-implemented method includes receiving a history log having application data for an application during normal use and generating a regression test scenario for a new version of the application based on a pattern of use of the application. The method further includes determining whether one or more existing regression test scenarios stored in a test scenario data store match the generated regression test scenario and executing a regression test on the new version of the application using the regression test scenario.