diff --git a/docs/source/conf.py b/docs/source/conf.py
index 49d2a230..5c4a8dce 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -34,7 +34,7 @@
 release = "0.4.0"
 
 # Document class docstrings
-autoclass_content = 'both'
+autoclass_content = "both"
 
 # -- General configuration ---------------------------------------------------