diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index e3c7ac8..c681f5a 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -10,27 +10,52 @@ on:
     branches: [ "main" ]
 
 jobs:
+  install-macports-on-macos-11:
+    runs-on: macos-11
+    name: 'Install MacPorts 2.9.3 on MacOS 11'
+    steps:
+      - uses: actions/checkout@v3
+      - uses: melusina-org/setup-macports@v1
+        id: 'macports'
+        with:
+          parameters: 'testsuite/run-testsuite-on-macos-11.yaml'
+      - name: 'Validate installed MacPorts version'
+        run: >-
+          test "$(port version)" = 'Version: 2.9.3'
+      - name: 'Validate transmitted MacPorts prefix'
+        run: >-
+          test "${{ steps.macports.outputs.prefix }}" = '/opt/local'
+      - name: 'Validate transmitted MacPorts version'
+        run: >-
+          test "${{ steps.macports.outputs.version }}" = '2.9.3'
+
+  install-macports-on-macos-12:
+    runs-on: macos-12
+    name: 'Install MacPorts 2.9.3 on MacOS 12'
+    steps:
+      - uses: actions/checkout@v3
+      - name: 'Run testsuite'
+        run: development/testsuite
+      - uses: melusina-org/setup-macports@v1
+        with:
+          parameters: 'testsuite/run-testsuite-on-macos-12.yaml'
+      - run: port version
 
   build:
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v3
 
-    - name: Set up Xcode
-      uses: maxim-lobanov/setup-xcode@v1
-      with:
-        xcode-version: latest
-
     - name: Set up Go
       uses: actions/setup-go@v4
       with:
         go-version: '1.21'
 
     - name: Install Dependencies
-      run: brew install --force mpv && brew install dylibbundler
+      run: sudo port install mpv +libmpv && sudo port install dylibbundler
 
     - name: Setup path
-      run: export C_INCLUDE_PATH=/usr/local/include:/opt/homebrew/include:$C_INCLUDE_PATH && export LIBRARY_PATH=/usr/local/lib:/opt/homebrew/lib:$LIBRARY_PATH
+      run: export C_INCLUDE_PATH=/usr/local/include:$C_INCLUDE_PATH && export LIBRARY_PATH=/usr/local/lib:$LIBRARY_PATH
 
     - name: Build
       run: go build