diff --git a/.readthedocs.yml b/.readthedocs.yml
index b85b4bc27f..a480b305d2 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,6 +5,10 @@
 # Required
 version: 2
 
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
 # Build documentation with MkDocs
 mkdocs:
   configuration: mkdocs.yml