pin os and python version in rtd build

diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 0c363636f68da8d2b2a28a0fded9c59066f1ed00..346900b20057ec00e57daea6fe05344254f1c168 100644 (file)
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,4 +1,8 @@
 version: 2
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.10"
 python:
   install:
     - requirements: requirements/docs.txt