diff --git a/pyproject.toml b/pyproject.toml
index 4dc3e9d4..f8919703 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -97,7 +97,7 @@ dev = [
     "openadapt-types>=0.18.0,<0.22.0",
     # Engineering-hygiene gates (lint+format, type-check, coverage). Pinned to
     # majors so CI and local dev run the same checkers.
-    "ruff==0.17.0",
+    "ruff==0.17.1",
     "mypy>=1.11",
     "pytest-cov>=5.0",
     "jsonschema>=4.21",