diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index cff2f6e..31ca708 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -15,6 +15,11 @@ build:
 sphinx:
   configuration: doc/conf.py
 
+# Optionally build your docs in additional formats such as PDF and ePub
+formats:
+  - epub
+  - pdf
+
 # We recommend specifying your dependencies to enable reproducible builds:
 # https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
 python: