diff --git a/pyproject.toml b/pyproject.toml
index 27a10cb..3bd5605 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -73,7 +73,7 @@ dev = [
     "pyyaml>=6.0,<8",
     # Pinned: a formatter that floats breaks CI on its own release schedule,
     # with no change to this codebase. Bump deliberately.
-    "ruff==0.16.2",
+    "ruff==0.16.3",
 ]
 
 [tool.setuptools]