diff --git a/pyproject.toml b/pyproject.toml
index 9c214e9..887644d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = []
 # whole project: `pip install .[dev]`, no separate requirements files.
 [project.optional-dependencies]
 dev = [
-    "ruff==0.16.1",
+    "ruff==0.16.6",
     "bandit==1.9.4",
     "pytest==9.1.1",
 ]