diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 90513da..3421968 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -2,6 +2,6 @@ version: 2
 sphinx:
   configuration: docs/conf.py
 python:
-  version: 3.9
+  version: 3.8
   install:
     - path: .