diff --git a/pyproject.toml b/pyproject.toml
index af92ac5..9a2e9b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ dev = [
     "pytest-asyncio>=0.21.0",
     "pytest-timeout>=2.1.0",
     "httpx>=0.24.0",
-    "ruff==0.15.16",  # pinned: keep in sync with lint.yml + .pre-commit-config.yaml
+    "ruff==0.15.20",  # pinned: keep in sync with lint.yml + .pre-commit-config.yaml
 ]
 # Documentation
 docs = [