diff --git a/docs/conf.py b/docs/conf.py
index 18db9f51..85b1e6d4 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -248,7 +248,7 @@ def setup(app):
 # -- Options for intersphinx extension ---------------------------------------
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'python': ('https://docs.python.org/3', None)}
+intersphinx_mapping = {"python": ("https://docs.python.org/3", None)}
 
 
 # Prevent that all member and method tables are tables of contents (numpydoc).