fix for readthedocs build on python3.9

zachcamara-hpe · zachcamara-hpe · commit 532dc2d70c9c · 2022-03-26T18:12:54.000-07:00
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
@@ -7,6 +7,7 @@ version: 2
 
 # Set the version of Python and other tools
 build:
+  os: ubuntu-20.04
   tools:
     python: "3.9"
 
