diff --git a/pyproject.toml b/pyproject.toml
index eb577675..3323b80a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ Homepage = "https://github.com/testing-cabal/testtools"
 [project.optional-dependencies]
 test = ["testscenarios", "testresources"]
 twisted = ["Twisted", "fixtures"]
-dev = ["ruff==0.12.3"]
+dev = ["ruff==0.12.5"]
 
 [tool.hatch.version]
 source = "vcs"