diff --git a/doc/source/conf.py b/doc/source/conf.py
index 74d6595..8539e09 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -68,7 +68,7 @@ add_function_parentheses = True
 add_module_names = True
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # -- Options for HTML output --------------------------------------------------
 
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index 75aab4d..3bfc4fe 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -93,7 +93,7 @@ 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 = []