diff --git a/docs/extensions/check_events.py b/docs/extensions/check_events.py
index 550f7a5..1ee1c69 100644
--- a/docs/extensions/check_events.py
+++ b/docs/extensions/check_events.py
@@ -1,4 +1,5 @@
 """Check events.yaml and blog posts are consistent."""
+
 from __future__ import annotations
 
 from pathlib import Path
diff --git a/docs/extensions/legacy_redirects.py b/docs/extensions/legacy_redirects.py
index 4ba5428..9dbc74c 100644
--- a/docs/extensions/legacy_redirects.py
+++ b/docs/extensions/legacy_redirects.py
@@ -3,6 +3,7 @@
 The logic works similar to sphinx.rediraffe, but handles adding index.html
 for end-points.
 """
+
 import json
 from os.path import relpath
 from pathlib import Path
diff --git a/docs/extensions/selective_css.py b/docs/extensions/selective_css.py
index c6a9a2d..bae5c6d 100644
--- a/docs/extensions/selective_css.py
+++ b/docs/extensions/selective_css.py
@@ -1,4 +1,5 @@
 """Add CSS selectively to pages"""
+
 from sphinx.application import Sphinx