diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index c45cfa7ae0..cc347e9fa2 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -12,8 +12,9 @@ build:
 sphinx:
   configuration: docs/source/conf.py
 
-# formats:
-#    - pdf
+formats:
+  - htmlzip
+  - pdf
 
 python:
   install: