diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 5d3177879..20221e8d0 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -13,7 +13,8 @@ build:
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/conf.py
-
+formats:
+   - pdf
 # We recommend specifying your dependencies to enable reproducible builds:
 # https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
 python: