diff --git a/tox.ini b/tox.ini
index fef03d3c9b3f348823bfc042d4d59eaa5bc62604..afd8239b1d58915f135bb677ff2ee2cd427cd6e1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -41,7 +41,7 @@ commands = poetry run make -C docs/ html {posargs}
 [testenv:reformat]
 commands =
     poetry run isort -rc aleksis/
-    poetry run black aleksis/
+    poetry run black --exclude "migrations" aleksis/
 
 [flake8]
 max_line_length = 100
@@ -56,6 +56,7 @@ use_parantheses = 1
 default_section = THIRDPARTY
 known_first_party = aleksis
 known_django = django
+skip = migrations
 sections = FUTURE,STDLIB,DJANGO,THIRDPARTY,FIRSTPARTY,LOCALFOLDER
 
 [mypy]