diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index ca3b88e..9bc456d 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -12,29 +12,53 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         compiler: ["gcc", "clang"]
     env:      
       CC: ${{ matrix.compiler }}
     steps:
       - uses: actions/checkout@v3
+        with:
+          submodules: 'true'     
+      - run: git submodule update --init --recursive
       - run: make
+      - run: lscpu
       - run: ./icapp ZIPF
-      
+
+  macos:
+    runs-on: '${{ matrix.os }}'
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest]
+        compiler: ["clang"]
+    env:      
+      CC: ${{ matrix.compiler }}
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: 'true'
+      - run: git submodule update --init --recursive
+      - run: make
+      - run: sysctl -n machdep.cpu.brand_string
+      - run: ./icapp ZIPF
+
   windows:
     runs-on: windows-latest
     defaults:
       run:
         shell: msys2 {0}
     steps:
-    - uses: actions/checkout@v3
-    - uses: msys2/setup-msys2@v2
-      with:
-        msystem: MINGW64
-        install: make mingw-w64-x86_64-gcc
-        update: true
-    - name: make
-      run: |
-        make
-        ./icapp ZIPF
+      - uses: actions/checkout@v3
+        with:
+          submodules: 'true'
+      - uses: msys2/setup-msys2@v2
+        with:
+          msystem: MINGW64
+          install: git make mingw-w64-x86_64-gcc
+          update: true
+      - run: git submodule update --init --recursive
+      - run: make
+      - run: ./icapp ZIPF
+