Build with RTD Python 3.9 (#1702)

Daltz333 · web-flow · commit 35da020446cd · 2022-04-29T17:29:46.000-05:00
* Build with RTD Python 3.9

* Clarify build file
diff --git a/readthedocs.yml b/readthedocs.yml
@@ -5,11 +5,15 @@ sphinx:
   configuration: source/conf.py
   fail_on_warning: true
 
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.9"
+ 
 formats:
   - htmlzip
   - pdf
 
 python:
-  version: "3.8"
   install:
   - requirements: source/requirements.txt
