From afe823e5f14c9ec048a6f747a485a46b243b8610 Mon Sep 17 00:00:00 2001
From: Luca <Lanqiao-Luca@users.noreply.github.com>
Date: Wed, 4 Nov 2026 22:36:58 +0800
Subject: [PATCH] fix(ci): pin Python 3.9 Linux checks to Ubuntu 24.04

---
 .github/workflows/ci.yml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5194fbe..11aee65 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,13 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-15-intel]
         python: ['3.9', '3.12']
+        # Python 3.9 has no setup-python build for Ubuntu 26.04.
+        exclude:
+          - os: ubuntu-latest
+            python: '3.9'
+        include:
+          - os: ubuntu-24.04
+            python: '3.9'
     env:
       PYTHONDONTWRITEBYTECODE: '1'
     steps: