Applications rely on many different services and external sources to the code itself to work these days and these dependencies bring unreliability and inconsistency to our tests when these services are not working properly. Are the test results reflecting the status of the code? Is the test being impacted by an unavailable service? Can we ensure the code is properly working in this case? Consistency is key in automation testing and external factors can impact the results of your tests, making us doubtful to state if the feature is properly working or not. In this situation, mock services become an invaluable ally for us. Wiremock is a mock service that comes with many interesting capabilities to provide stability to our tests which allow us paying attention to what really matters: the code. In this presentation, I will speak about the possibilities that Wiremock brings to our tests and I will present a demo to show how this service can support an automated UI test.