From 4d1e7315b76e4b1768356a496b95bf06608a9751 Mon Sep 17 00:00:00 2001
From: Hantao Cui <cuihantao@gmail.com>
Date: Sat, 21 Oct 2023 01:44:43 +0000
Subject: [PATCH] Add `os` for readthedocs build.

---
 .readthedocs.yml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/.readthedocs.yml b/.readthedocs.yml
index 58fdf17c6..87c5221ea 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -3,12 +3,16 @@ version: 2
 formats:
   - pdf
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/source/conf.py
 
 python:
-  version: 3.8
   install:
     - requirements: requirements.txt
     - method: pip