diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index b5542b4f1e..484077876a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -52,12 +52,16 @@ jobs:
       - run: npm test
 
   build:
-    runs-on: ${{ matrix.os }}
+    runs-on: ${{ matrix.platform.os }}
     needs: tests
     strategy:
       matrix:
-        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        cmd: ["build:linux", "build:macos", "build:windows"]
+        platform:
+          [
+            { os: "ubuntu-latest", cmd: "build:linux" },
+            { os: "macos-11", cmd: "build:macos" },
+            { os: "windows-latest", cmd: "build:windows" },
+          ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
@@ -89,7 +93,7 @@ jobs:
           echo "C:\Program Files\Git\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
           echo "C:\Program Files\Git\mingw64\libexec\git-core" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
       - run: npm ci
-      - run: npm run ${{ matrix.cmd }}
+      - run: npm run ${{ matrix.platform.cmd }}
         shell: bash
         env:
           VERSION: ${{ steps.package-version.outputs.version}}