diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 8f7690c..0b817b4 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -34,6 +34,7 @@ jobs:
         with:
           version: ${{ matrix.qt_ver }}
           cached: 'false'
+          aqtversion: '==2.0.5'
           modules: 'qtmultimedia qt5compat qtshadertools'
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 752c3c8..766465e 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -18,14 +18,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-18.04,ubuntu-20.04]
+        os: [ubuntu-20.04]
         qt_ver: [6.4.3]
         qt_arch: [gcc_64]
-        exclude: 
-          # Qt6.2.2 need GLIBC_2.28, ubuntu 18.04 have not.
-          - os: ubuntu-18.04
-            qt_ver: 6.4.3
-            qt_arch: gcc_64
     env:
       targetName: example
     steps:
@@ -34,9 +29,10 @@ jobs:
         with:
           version: ${{ matrix.qt_ver }}
           cached: 'false'
+          aqtversion: '==2.0.5'   
           modules: 'qtmultimedia qt5compat qtshadertools'
       - name: ubuntu install GL library
-        run: sudo apt-get install -y libglew-dev libglfw3-dev qml-module-qtquick-controls qml-module-qtquick-controls2 qml-module-qtmultimedia
+        run: sudo apt-get install -y libglew-dev libglfw3-dev qml-module-qtquick-controls qml-module-qtquick-controls2
       - uses: actions/checkout@v2
         with:
           fetch-depth: 1