diff --git a/tox.ini b/tox.ini
index 57c2f4e..0a594c8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -65,7 +65,7 @@ deps =
 
 [testenv:pep8]
 basepython = python3
-deps = flake8==3.9.2
+deps = flake8==7.1.1
        git+https://github.com/juju/charm-tools.git
 commands = flake8 {posargs} hooks unit_tests tests actions lib files
            charm-proof