diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index bf3fd666694..6d688adecf4 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,4 +10,7 @@ sphinx:
 
 python:
   install:
-    - requirements: doc/docportal/requirements.txt
\ No newline at end of file
+    - requirements: doc/docportal/requirements.txt
+
+formats:
+  - pdf