diff --git a/doc/source/conf.py b/doc/source/conf.py
index f3bb81b..e518b4a 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -103,7 +103,7 @@ exclude_patterns = []
 # show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # A list of ignored prefixes for module index sorting.
 # modindex_common_prefix = []
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index 910422c..7c87cad 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -109,7 +109,7 @@ exclude_patterns = []
 # show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # A list of ignored prefixes for module index sorting.
 # modindex_common_prefix = []