Add required build.os

hugovk · hugovk · commit 04fcbe7d2cb5 · 2022-01-07T19:47:50.000+02:00
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -11,6 +11,7 @@ sphinx:
 formats: all
 
 build:
+  os: ubuntu-20.04
   tools:
     python: "3.10"
 
