diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 346900b2..76ec7ba0 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -11,3 +11,6 @@ python:
 sphinx:
   builder: dirhtml
   fail_on_warning: true
+formats:
+  - pdf
+  - epub