diff --git a/.github/workflows/test-macos-arm.yaml b/.github/workflows/test-macos-arm.yaml
new file mode 100644
index 00000000..7b230f2f
--- /dev/null
+++ b/.github/workflows/test-macos-arm.yaml
@@ -0,0 +1,93 @@
+name: Test macOS ARM
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    name: Test on macOS ARM
+    runs-on: macos-14  # ARM64 (M1) runner
+    timeout-minutes: 90
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          submodules: true
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install Rust
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+
+      - name: Install Cython
+        run: |
+          python3 --version
+          python3 -m pip install --upgrade pip
+          python3 -m pip install cython
+
+      - name: Install test dependencies
+        run: python3 ci/pip_install_deps.py
+
+      - name: Build
+        run: python3 proj.py build
+
+      - name: Run tests
+        run: python3 proj.py test 1
+        env:
+          JAVA_HOME: ${{ env.JAVA_HOME_17_ARM64 }}
+
+  test-numpy-compat:
+    name: Test numpy compatibility
+    runs-on: macos-14  # ARM64 (M1) runner
+    timeout-minutes: 90
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - python-version: "3.10"
+            numpy-version: "1.21.0"
+          - python-version: "3.10"
+            numpy-version: "1.24.0"
+          - python-version: "3.10"
+            numpy-version: "1.26.0"
+          - python-version: "3.11"
+            numpy-version: "2.0.0"
+          - python-version: "3.11"
+            numpy-version: "2.2.0"
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          submodules: true
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install Rust
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+
+      - name: Install uv
+        run: python3 -m pip install uv
+
+      - name: Run tests with numpy ${{ matrix.numpy-version }}
+        run: uv run --python python --with 'numpy==${{ matrix.numpy-version }}' test/test.py -v TestBufferProtocolVersionV2