diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index bc23deb5f0..4455c2901e 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,6 +1,8 @@
 # Required by Read The Docs
 version: 2
 
+formats: all
+
 python:
   version: "3.8"