diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 3eab1cefe..350ac42d8 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -16,3 +16,6 @@ python:
     - requirements: docs/requirements.txt
 #    - requirements: requirements.txt
 #    - requirements: requirements-dev.txt
+
+formats:
+  - pdf