diff --git a/tox.ini b/tox.ini
index 57e57bc63..5f57cfb11 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,7 +32,7 @@ deps =
     pre-commit
 commands =
     pre-commit install
-    pre-commit run --all-files
+    pre-commit run --all-files --show-diff-on-failure
 
 # Coverage configuration
 [run]