diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 23a5340..0cdb04b 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -14,3 +14,5 @@ python:
       path: .
       extra_requirements:
         - doc
+formats:
+  - pdf
\ No newline at end of file