diff --git a/tox.ini b/tox.ini
index c9cd9e6..9b9a790 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,9 +31,9 @@ deps =
 [testenv:lint]
 basepython = python3.6
 deps =
-    flake8==3.8.4
+    flake8==3.9.0
     black==20.8b1
-    isort==5.6.4
+    isort==5.8.0
 commands =
     flake8 django_migration_linter/
     black --check django_migration_linter/ tests/ manage.py setup.py