diff --git a/readthedocs.yml b/readthedocs.yml
index 2f28792a..ba61a334 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -1,8 +1,11 @@
 version: 2
+build:
+  os: ubuntu-20.04
+  tools:
+    python: mambaforge-4.10
 python:
-  version: "3.7"
   install:
-      - method: pip
-        path: .
+  - method: pip
+    path: .
 conda:
   environment: docs/environment.yml