From 0388026201c18db61d45dae6ba1e39964e9a24f6 Mon Sep 17 00:00:00 2001
From: kakakakakku <y.yoshida22@gmail.com>
Date: Wed, 6 May 2026 22:18:32 +0900
Subject: [PATCH] fix: pin Poetry to 2.2.1 as Python 3.9 support was dropped in
 2.3.0

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7b56e730..3da9ecda 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,7 @@ jobs:
       - name: Setup Graphviz
         uses: ts-graphviz/setup-graphviz@v2
       - name: Install poetry
-        run: curl -sSL https://install.python-poetry.org | python3 -
+        run: curl -sSL https://install.python-poetry.org | python3 - --version 2.2.1
       - name: Run all tests
         run: |
           poetry install