diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 359acfafd28c5b7bbe094bc83edd41ecaaf7ad73..14edd72ddabf18d561b629d21e20f110458b105a 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -14,7 +14,7 @@ formats: all
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.9
+  version: 3.8
   install:
     - requirements: docs/requirements.txt
     - method: setuptools