diff --git a/tox.ini b/tox.ini
index b2997c05b..67a089b0c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -99,7 +99,7 @@ skip_install = true
 deps =
      # Pin a specific version so we get consistent outcomes; update this
      # occasionally:
-     ruff == 0.0.263
+     ruff == 0.0.278
      # towncrier doesn't work with importlib_resources 6.0.0
      # https://github.com/twisted/towncrier/issues/528
      importlib_resources < 6.0.0