diff --git a/mempalace/hooks_cli.py b/mempalace/hooks_cli.py
index e927d9e..8532632 100644
--- a/mempalace/hooks_cli.py
+++ b/mempalace/hooks_cli.py
@@ -245,12 +245,16 @@ def hook_stop(data: dict, harness: str):
         try:
             from .config import MempalaceConfig
         except ImportError as exc:
-            _log(f"WARNING: could not import MempalaceConfig for stop guard: {exc}; preserving block-mode guard")
+            _log(
+                f"WARNING: could not import MempalaceConfig for stop guard: {exc}; preserving block-mode guard"
+            )
         else:
             try:
                 silent_guard = MempalaceConfig().hook_silent_save
             except AttributeError as exc:
-                _log(f"WARNING: could not read hook_silent_save: {exc}; preserving block-mode guard")
+                _log(
+                    f"WARNING: could not read hook_silent_save: {exc}; preserving block-mode guard"
+                )
         if not silent_guard:
             _output({})
             return
diff --git a/tests/test_hooks_cli.py b/tests/test_hooks_cli.py
index 58e7d4e..8e54837 100644
--- a/tests/test_hooks_cli.py
+++ b/tests/test_hooks_cli.py
@@ -255,10 +255,12 @@ def test_output_falls_back_to_fd1_when_mcp_server_absent():
         os.dup2(write_fd, 1)
         os.close(write_fd)
         try:
-            modules_without_mcp = {k: v for k, v in __import__("sys").modules.items()
-                                    if "mcp_server" not in k}
+            modules_without_mcp = {
+                k: v for k, v in __import__("sys").modules.items() if "mcp_server" not in k
+            }
             with patch.dict("sys.modules", modules_without_mcp, clear=True):
                 from mempalace.hooks_cli import _output
+
                 _output({"continue": True})
         finally:
             os.dup2(orig_fd1, 1)