diff --git a/pyproject.toml b/pyproject.toml
index 1b2431c..f6aa9c5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ pytest-asyncio = ">=1.3.0"
 pytest-socket = ">=0.7.0"
 # Pinned exactly: CI resolves fresh, so a floating formatter changes the verdict
 # on untouched branches. Dependabot raises upgrades as their own PR.
-ruff = "==0.16.3"
+ruff = "==0.16.5"
 
 [tool.pytest.ini_options]
 # Pinned explicitly: pytest-asyncio's default is currently unset and will