diff --git a/tox.ini b/tox.ini
index 4dd09b661eb7f4169382e30ef3a70d61b75ca218..8bfef47e58735f1d937e8cb31b6e01a9a81e4cb4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,6 +27,6 @@ commands =
     coverage report
     isort -c .
     ruff .
-    black .
+    black --check .
     mypy .
     flake8