diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 376852a..b662114 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.6.9
+    rev: v0.15.11
     hooks:
       - id: ruff
         args: [--fix]
diff --git a/pyproject.toml b/pyproject.toml
index 5704418..99f4c65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dev = [
   "pytest-asyncio>=0.23",
   "pytest-cov>=5.0",
   "respx>=0.21",
-  "ruff>=0.6",
+  "ruff==0.15.11",
   "pyright>=1.1.380",
   "pre-commit>=3.8",
   "types-pyyaml>=6.0",
diff --git a/tests/test_sync.py b/tests/test_sync.py
index e69291a..c054001 100644
--- a/tests/test_sync.py
+++ b/tests/test_sync.py
@@ -161,9 +161,9 @@ def test_add_target_duplicate_path_raises_conflict() -> None:
         add_target(config, path="~/skills", preset=None, scope="all", only=[])
     hint = exc_info.value.hint or ""
     assert "--only" in hint, "hint should mention --only"
-    assert (
-        "edit the sync config by hand" not in hint
-    ), "hint must not say 'edit the sync config by hand'"
+    assert "edit the sync config by hand" not in hint, (
+        "hint must not say 'edit the sync config by hand'"
+    )
 
 
 def test_add_target_duplicate_detected_across_path_forms() -> None:
diff --git a/uv.lock b/uv.lock
index 3aba07d..a6cadf1 100644
--- a/uv.lock
+++ b/uv.lock
@@ -221,7 +221,7 @@ dev = [
     { name = "pytest-asyncio", specifier = ">=0.23" },
     { name = "pytest-cov", specifier = ">=5.0" },
     { name = "respx", specifier = ">=0.21" },
-    { name = "ruff", specifier = ">=0.6" },
+    { name = "ruff", specifier = "==0.15.11" },
     { name = "types-pyyaml", specifier = ">=6.0" },
 ]