diff --git a/.readthedocs.yml b/.readthedocs.yml
index d8393d24..d0de2be6 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,18 +5,20 @@
 # Required
 version: 2
 
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+  jobs:
+    # Do not use shallow clone, as reno will complain
+    post_checkout:
+      - git fetch --unshallow
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: doc/source/conf.py
 
-# Build documentation with MkDocs
-#mkdocs:
-#  configuration: mkdocs.yml
-
-# Optionally build your docs in additional formats such as PDF
-formats:
-  - pdf
-
 # Optionally set the version of Python and requirements required to build your docs
 python:
   install:
diff --git a/doc/requirements.txt b/doc/requirements.txt
index fd49d684..d1c6a834 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
 sphinx>=4.0.2
-sphinx_rtd_theme
+sphinx_rtd_theme>=1.2.2 
 recommonmark
 reno>=2.5.0