diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index c339ffe8..0b2d9939 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -19,3 +19,6 @@ python:
 # Doc builds will fail if there are any warnings
 sphinx:
   fail_on_warning: true
+
+formats:
+  - pdf