diff --git a/readthedocs.yml b/readthedocs.yml
index 2453623..b48f7f0 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -6,7 +6,7 @@ build:
   os: "ubuntu-20.04"
   # image: latest
   tools:
-    python: '3.11'
+    python: 'mambaforge-22.9'
 
 # python:
 #   version: 3.11