diff --git a/pyproject.toml b/pyproject.toml
index b4fbfeea..d852829b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,7 +63,7 @@ optional-dependencies.dev = [
     "pytest-asyncio==1.3.0",
     "pytest-cov==7.0.0",
     "pyyaml==6.0.3",
-    "ruff==0.15.2",
+    "ruff==0.15.4",
     # We add shellcheck-py not only for shell scripts and shell code blocks,
     # but also because having it installed means that ``actionlint-py`` will
     # use it to lint shell commands in GitHub workflow files.