diff --git a/pyproject.toml b/pyproject.toml
index e80e7f7..44aa662 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,6 +44,7 @@ filterwarnings = [
 ]
 markers = [
     "api_con_required: tests require an API connection (deselect with '-m \"not api_con_required\"')",
+    "new: to test only new tests, usually removed afterwards (deselect with '-m \"not quick\"')",
 ]
 log_cli = true