diff --git a/tox.ini b/tox.ini
index 99c9eb5..ec815a9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ envlist = flake8,codespell,eslint
 
 [testenv:flake8]
 skip_install = true
-deps = flake8
+deps = flake8<6.0
        flake8-author
        flake8-blind-except
        flake8-bugbear