diff --git a/.readthedocs.yml b/.readthedocs.yml
index 10d4fd023..63d059cec 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -3,8 +3,12 @@ version: 2
 build:
   image: latest
 
+sphinx:
+  builder: html
+  configuration: doc/conf.py
+  fail_on_warning: true
+
 python:
-  version: 3.8
   install:
     - method: pip
       path: .