diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4ec4b26f..a6e0883b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,13 +21,6 @@ jobs:
           restore-keys: |
             Library-
 
-      - name: fix symlink issue
-        run: |
-          rm ./Demo~/Assets/Plugins/backtrace-unity
-          mkdir ./Demo~/Assets/Plugins/backtrace-unity
-          cp -rf ./Android ./Editor ./iOS ./Runtime ./Tests ./Windows ./package.json ./Demo~/Assets/Plugins/backtrace-unity
-          mkdir project
-          mv ./Demo~/* ./project
       # Test
       - name: Run tests
         uses: game-ci/unity-test-runner@v4
@@ -36,7 +29,8 @@ jobs:
           UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
           UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
         with:
-          projectPath: ./project
+          packageMode: true
+          unityVersion: "2020.3.20f1"
 
       # Build
       - name: Build project
@@ -48,6 +42,7 @@ jobs:
         with:
           projectPath: ./project
           targetPlatform: WebGL
+          packageMode: true
 
       # Output
       - uses: actions/upload-artifact@v3