diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0cc683ce5..e39900250 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: v0.3.5
+    rev: v0.4.3
     hooks:
       - id: ruff
         name: ruff mne_bids/
diff --git a/doc/conf.py b/doc/conf.py
index 3bf2f4e76..75844212d 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -4,7 +4,7 @@
 from datetime import date
 
 import sphinx_gallery  # noqa: F401
-from sphinx_gallery.sorting import ExampleTitleSortKey
+from sphinx.config import is_serializable
 
 import mne_bids
 
@@ -179,7 +179,9 @@
     },
     "backreferences_dir": "generated",
     "examples_dirs": "../examples",
-    "within_subsection_order": ExampleTitleSortKey,
+    "within_subsection_order": "ExampleTitleSortKey",
     "gallery_dirs": "auto_examples",
     "filename_pattern": "^((?!sgskip).)*$",
 }
+
+assert is_serializable(sphinx_gallery_conf)