diff --git a/.readthedocs.yml b/.readthedocs.yml
index def6282dd..3e03c76ea 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,5 +1,8 @@
 version: 2
 
+sphinx:
+  configuration: docs/conf.py
+
 formats: [pdf]
 
 build: