diff --git a/.readthedocs.yml b/.readthedocs.yaml
similarity index 89%
rename from .readthedocs.yml
rename to .readthedocs.yaml
index 778bcc2..9773e1f 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yaml
@@ -3,9 +3,9 @@
 version: 2
 
 build:
-  os: "ubuntu-20.04"
+  os: "ubuntu-22.04"
   tools:
-    python: "3.8"
+    python: "3.10"
 
 # Build from the docs/ directory with Sphinx
 sphinx:
diff --git a/docs/changes.rst b/docs/changes.rst
index f2b43ce..93cedd2 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -5,7 +5,7 @@ Changes
 
 This chapter describes the changes coming with each new version of pygount.
 
-Version 1.5.1, 2022-12-31
+Version 1.5.1, 2023-01-02
 
 * Removed progress bar for ``--format=sloccount`` because it resulted into
   blank lines when running on Windows and could cause interwoven output on