diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 3b57618..3859357 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -4,3 +4,6 @@ build:
   os: "ubuntu-20.04"
   tools:
     python: "3.8"
+
+sphinx:
+  fail_on_warning: true