diff --git a/.readthedocs.yml b/.readthedocs.yml
index dcda8bc..3b21b9c 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -2,8 +2,12 @@ version: 2
 
 formats: all
 
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.12"
+
 python:
-  version: 3.12
   install:
     - requirements: requirements/development.txt
     - path: .