diff --git a/doc/en/conf.py b/doc/en/conf.py
index 6c81ad715..e64931ae5 100644
--- a/doc/en/conf.py
+++ b/doc/en/conf.py
@@ -137,10 +137,6 @@ add_module_names = False
 # output. They are ignored by default.
 # show_authors = False
 
-# The name of the Pygments (syntax highlighting) style to use.
-pygments_style = "sphinx"
-
-
 # A list of ignored prefixes for module index sorting.
 # modindex_common_prefix = []
 
diff --git a/doc/en/requirements.txt b/doc/en/requirements.txt
index 5ffa099d9..6e7221d64 100644
--- a/doc/en/requirements.txt
+++ b/doc/en/requirements.txt
@@ -7,5 +7,5 @@ sphinxcontrib-svg2pdfconverter
 # Pin packaging because it no longer handles 'latest' version, which
 # is the version that is assigned to the docs.
 # See https://github.com/pytest-dev/pytest/pull/10578#issuecomment-1348249045.
-packaging <22
+packaging
 furo