diff --git a/.readthedocs.yml b/.readthedocs.yml
index 7ce2b26..d28116a 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -4,6 +4,11 @@
 # Required
 version: 2
 
+build:
+  os: ubuntu-lts-latest
+  tools:
+    python: "3"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/conf.py