diff --git a/tox.ini b/tox.ini
index 4532176..2f2b19c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,7 +31,7 @@ commands=
 changedir=
 deps =
   pre-commit
-commands = pre-commit run --all
+commands = pre-commit run --all-files --show-diff-on-failure
 
 [testenv:release]
 changedir=