diff --git a/ops-sunbeam/tox.ini b/ops-sunbeam/tox.ini
index 45f91cc0..034a8e65 100644
--- a/ops-sunbeam/tox.ini
+++ b/ops-sunbeam/tox.ini
@@ -75,8 +75,7 @@ commands = {[testenv:lint]commands}
 description = Check code against coding style standards
 deps =
     black
-    # flake8==4.0.1 # Pin version until https://github.com/csachs/pyproject-flake8/pull/14 is merged
-    flake8
+    flake8<6
     flake8-docstrings
     flake8-copyright
     flake8-builtins