diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b96299f..e9f66cd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,44 +9,20 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
-    name: Ruby ${{ matrix.ruby }}
-    strategy:
-      fail-fast: false
-      matrix:
-        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
+    run-on: macos-latest
+    name: Ruby 3.3 (macOS)
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Ruby
+    - name: Install llama.cpp
+      run: |
+        brew install llama.cpp
+        brew info llama.cpp
+    - name: Set up Ruby 3.3
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: ${{ matrix.ruby }}
+        ruby-version: 3.3
         bundler-cache: true
-    - name: Run the default task
-      run: bundle exec rake
-  build-win:
-    runs-on: windows-latest
-    name: Ruby 3.2 (Windows)
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up Ruby 3.2
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.2
-          bundler-cache: true
-      - name: Build and test with Rake
-        run: |
-          bundle exec rake compile -- --with-no-openmp
-          bundle exec rake test
-  build-mac:
-    runs-on: macos-latest
-    name: Ruby 3.2 (macOS)
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up Ruby 3.2
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.2
-          bundler-cache: true
-      - name: Build and test with Rake
-        run: bundle exec rake
+    - name: Build and test with Rake
+      run: |
+        bundle exec rake compile -- --with-opt-dir=/opt/homebrew
+        bundle exec rake test