diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 996c397f61..501aa38100 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -14,6 +14,12 @@ build:
 sphinx:
   configuration: docs/source/conf.py
 
+# Optionally build your docs in additional formats
+formats:
+  - htmlzip
+  - epub
+  - pdf
+
 # We recommend specifying your dependencies to enable reproducible builds:
 # https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
 python:
diff --git a/docs/source/Reference.rst b/docs/source/Reference.rst
index ae80d66de8..297ec6dfc4 100644
--- a/docs/source/Reference.rst
+++ b/docs/source/Reference.rst
@@ -7,6 +7,10 @@ Show the API documentation for version:
 
 * `latest (main branch) <_static/api.html>`_
 
+* `version 5.2 <_static/api.html?version=v5.2>`_
+
+* `version 5.1 <_static/api.html?version=v5.1>`_
+
 * `version 5.0 <_static/api.html?version=v5.0>`_
 
 * `version 4.9 <_static/api.html?version=v4.9>`_