diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 347f3f09606..57f93911f5d 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -18,4 +18,5 @@ build:
 conda:
   environment: ci/requirements/doc.yml
 
-formats: []
+formats:
+  - htmlzip