diff --git a/.readthedocs.yml b/.readthedocs.yml
index 18f81acab2..bde8b64da0 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -15,7 +15,4 @@ python:
   install:
     - requirements: docs/requirements.txt
 
-formats:
-  - epub
-  - pdf
-  - htmlzip
+formats: all