diff --git a/.readthedocs.yml b/.readthedocs.yml
index 8ae03ae..5496403 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -11,7 +11,7 @@ sphinx:
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: "3.9"
+  version: "3.8"
   install:
     - method: pip
       path: .