diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 28f55b3..999c572 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -3,14 +3,19 @@ name: macos
 on: [push]
 
 jobs:
-  build:
+  test:
     runs-on: macos-latest
+    strategy:
+      matrix:
+        ruby: [ head, 3.3 ]
     timeout-minutes: 10
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
     - name: Install dependencies
       run: |
-        gem install bundler --no-document
         bundle install
     - name: Run test
       run: bundle exec rake test
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index c10c912..84f1bbf 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -4,10 +4,10 @@ on: [push]
 
 jobs:
   test:
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         ruby: [ head, 3.3, 3.2, 3.1 ]
-    runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
     - uses: actions/checkout@v4
@@ -17,7 +17,6 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt install libncursesw5-dev
-        gem install bundler --no-document
         bundle install
     - name: Run test
       run: xvfb-run bundle exec rake test
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 5750b76..b426c0b 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -3,7 +3,7 @@ name: windows
 on: [push]
 
 jobs:
-  build:
+  test:
     runs-on: windows-latest
     strategy:
       matrix: