diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index afe49db..6195958 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -5,7 +5,11 @@ sphinx:
    configuration: content/conf.py
 
 # Optionally build your docs in additional formats such as PDF
-formats: all
+formats:
+  - epub
+  - pdf
+  - htmlzip
+  - all
 
 # Optionally set the version of Python and requirements required to build your docs
 python: