diff --git a/.readthedocs.yml b/.readthedocs.yml
index f0873ba44..39b7ec971 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,6 +1,10 @@
 # required by RTD
 version: 2
 
+sphinx:
+  # Path to your Sphinx configuration file.
+  configuration: docs/conf.py
+
 build:
   os: "ubuntu-20.04"
   tools: