diff --git a/.readthedocs.yml b/.readthedocs.yml
index 1093639..09d53a9 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -9,3 +9,6 @@ sphinx:
 python:
   install:
     - requirements: doc/requirements.txt
+
+build:
+  os: "ubuntu-22.04"