diff -Naur marshmallow-3.8.0.orig/docs/conf.py marshmallow-3.8.0/docs/conf.py
--- marshmallow-3.8.0.orig/docs/conf.py 2020-09-16 11:21:17.000000000 +0200
+++ marshmallow-3.8.0/docs/conf.py 2020-09-16 14:32:51.570352158 +0200
@@ -14,7 +14,6 @@
"sphinx.ext.viewcode",
"alabaster",
"sphinx_issues",
- "versionwarning.extension",
"autodocsumm",
]