diff --git a/.readthedocs.yml b/.readthedocs.yml
index bde8b64da0..93dd9fb9f3 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -10,6 +10,7 @@ build:
 
 sphinx:
   configuration: docs/conf.py
+  fail_on_warning: true
 
 python:
   install: