diff --git a/docs/conf.py b/docs/conf.py
index 5b0537c0..af0e7a8b 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -4,6 +4,12 @@
 
 import typing
 
+# https://github.com/sphinx-doc/sphinx/issues/9243
+import sphinx.builders.html  # noqa  pylint: disable=unused-import
+import sphinx.builders.latex  # noqa  pylint: disable=unused-import
+import sphinx.builders.texinfo  # noqa  pylint: disable=unused-import
+import sphinx.builders.text  # noqa  pylint: disable=unused-import
+import sphinx.ext.autodoc  # noqa  pylint: disable=unused-import
 import sphinx_rtd_theme  # noqa  pylint: disable=unused-import
 
 # pylint: disable=invalid-name,redefined-builtin