From 57a222d82c78fb5e49a2dd781f0e02cc67c0aff6 Mon Sep 17 00:00:00 2001
From: Jinzhe Zeng <jinzhe.zeng@ustc.edu.cn>
Date: Sun, 12 Apr 2026 00:40:18 +0800
Subject: [PATCH] CI: Update OS version in Read the Docs configuration

https://about.readthedocs.com/blog/2026/03/ubuntu-20-04-deprecated/

Signed-off-by: Jinzhe Zeng <jinzhe.zeng@ustc.edu.cn>
---
 .readthedocs.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.readthedocs.yml b/.readthedocs.yml
index 7cda715627..94ad679ce4 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,6 +1,6 @@
 version: 2
 build:
-  os: ubuntu-20.04
+  os: ubuntu-26.04
   tools:
     python: "3.11"
   jobs: