diff --git a/.readthedocs.yml b/.readthedocs.yml
index 4f57057..9cf5e30 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -19,13 +19,19 @@
 # Read the Docs configuration file
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 
+# Required
 version: 2
 
+build:
+  os: ubuntu-lts-latest
+  tools:
+    python: latest
+
+# Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/conf.py
   fail_on_warning: false
 
 python:
-  version: "3.7"
   install:
     - requirements: docs/requirements.txt
diff --git a/docs/requirements.txt b/docs/requirements.txt
index de55921..7c2b567 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,6 @@
-sphinx==4.5.0
+sphinx
 docutils
 git+https://github.com/f4pga/sphinx_f4pga_theme.git@f4pga#egg=sphinx-f4pga-theme
 sphinx-tabs
 sphinx-jinja
+docutils==0.17.1