diff --git a/tox.ini b/tox.ini
index 7be7829..67d13c5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -52,4 +52,4 @@ commands =
 [testenv:ruff]
 skip_install = true
 deps = ruff
-commands = ruff check {posargs:--show-source .}
+commands = ruff check {posargs:--output-format=full .}