diff --git a/tox.ini b/tox.ini
index f2e740db5..2b984daf4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,7 +29,7 @@ deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
        black
 commands =
-  black {posargs} gitlab tools/functional
+  black {posargs} .
 
 [testenv:twine-check]
 basepython = python3