diff --git a/.readthedocs.yml b/.readthedocs.yml
index 5b427a36..ef760972 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,11 +1,7 @@
 version: 2
 
-build:
-  on: "ubuntu-22.04"
-  tools:
-    python: "3.10"
-
 python:
+  version: 3.9
   install:
     - method: pip
       path: .