diff --git a/.readthedocs.yml b/.readthedocs.yml
index b58aea21..1beafda7 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -15,3 +15,5 @@ python:
 sphinx:
   builder: html
   fail_on_warning: true
+  # Path to the Sphinx configuration file.
+  configuration: docs/source/conf.py