diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 132dc1c419e82fa585f1ae7d0e7f1438c3edf6db..e4d4ac9daec923aa01863157a4be09f01e8a173f 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -8,10 +8,7 @@ version: 2
 build:
   os: ubuntu-20.04
   tools:
-  - sphinx
-
-#conda:
-#  environment: envINEED_win.yml
+    python: "3.8"
 
 sphinx:
    configuration: docs/source/conf.py