diff --git a/tox.ini b/tox.ini
index 829d596..58f283a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,7 +30,7 @@ commands = {posargs:py.test --cov=graphene_django graphene_django examples}
 basepython = python3.7
 deps = black
 commands  =
-    black graphene_django examples --check
+    black --exclude "/migrations/" graphene_django examples --check
 
 [testenv:flake8]
 basepython = python3.7