diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 1fd2f60..098a67c 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -3,7 +3,7 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "3.8"
+    python: "3.9"
 
 python:
   install: