diff --git a/.readthedocs.yml b/.readthedocs.yml
index ba388dd..4c6bad4 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,7 +1,12 @@
-requirements_file: .readthedocs.requirements.txt
+version: 2
 
-conda:
-  file: docs/environment.yml
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "mambaforge-22.9"
+
+formats:
+  - pdf
 
-python:
-  version: "3.8"
+conda:
+  environment: docs/environment.yml