diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 2db67cc..edac333 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -13,13 +13,25 @@ jobs:
   test_unix:
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-latest]
-        ruby-version: ['2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2']
-    runs-on: ${{ matrix.os }}
+        ruby-version: ['2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3']
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1.176.0
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Run tests
+      run: bundle exec rake
 
+  test_mac_os:
+    strategy:
+      matrix:
+        ruby-version: ['3.1', '3.2', '3.3']
+    runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@v1.152.0
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1.176.0
       with:
         ruby-version: ${{ matrix.ruby-version }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
@@ -29,12 +41,11 @@ jobs:
   test_windows:
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0', '3.1', '3.2']
+        ruby-version: ['3.1', '3.2', '3.3']
     runs-on: windows-latest
-
     steps:
-    - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@v1.152.0
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1.176.0
       with:
         ruby-version: ${{ matrix.ruby-version }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically