diff --git a/.readthedocs.yml b/.readthedocs.yml
index e008416..682031b 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -8,6 +8,11 @@ build:
 mkdocs:
   configuration: mkdocs.yml
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.8"
+
 python:
   install:
     - requirements: doc/requirements.txt