diff --git a/readthedocs.yml b/readthedocs.yml
index f21130321..9b5447ca5 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -5,5 +5,9 @@ build:
   tools:
     python: mambaforge-22.9
 
+sphinx:
+  # Path to Sphinx configuration file
+  configuration: docs/source/conf.py
+
 conda:
   environment: docs/rtd_environment.yml