diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 29d1f231d32..af3fa8bfec2 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -13,7 +13,8 @@ build:
 sphinx:
    configuration: doc/OnlineDocs/conf.py
 
-formats: all
+formats:
+  - pdf
 
 # Set the version of Python and requirements required to build the docs
 python: