diff --git a/tests/README.md b/tests/README.md
index 2034ed70..adedcc4c 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -18,3 +18,13 @@ docker build -t basnijholt/adaptive-lighting:latest --no-cache .
 ```
 
 This might be necessary if the image on Docker Hub is outdated or if the [`test_dependencies.py`](../test_dependencies.py) file is updated.
+
+## Passing arguments to pytest
+
+You can pass arguments to pytest by appending them to the command:
+
+For example, to run the tests with a custom log format, use the following command (this also gets rid of the captured stderr output):
+
+```bash
+docker run -v $(pwd):/app basnijholt/adaptive-lighting:latest --show-capture=log --log-format="%(asctime)s %(levelname)-8s %(name)s:%(filename)s:%(lineno)s %(message)s" --log-date-format="%H:%M:%S" tests/components/adaptive_lighting/
+```