diff --git a/.readthedocs.yml b/.readthedocs.yml
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+++ b/.readthedocs.yml
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+# Configuration for the Read The Docs (RTD) builds of the documentation.
+# Ref: https://docs.readthedocs.io/en/stable/config-file/v2.html
+# Note python.install.requirements is not currently required, as Sphinx is
+# preinstalled and spelling checks not performed by RTD.
+version: 2
+
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.10"
+
+sphinx:
+  configuration: docs/conf.py
+
+formats:
+  - epub
+  - pdf
+  - htmlzip