diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index aa15c7c..e2b32ed 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -14,3 +14,7 @@ python:
     path: .
     extra_requirements:
     - docs
+
+formats:
+- pdf
+- epub