From 1c243ab9588f91b651caf3ef37adc1a80d202b63 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Mon, 6 Jul 2026 15:57:15 -0700
Subject: [PATCH] Use default Bundler for ruby-head CI

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

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7fc000e8..751894be 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -33,6 +33,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
+          bundler: ${{ matrix.ruby == 'head' && 'default' || 'Gemfile.lock' }}
           bundler-cache: true
 
       - name: Run tests