diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4257a80068..daa0073958 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,8 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        qt-version: ["5.15.2", "5.12.8"]
+        runs-on: ["ubuntu-latest", "ubuntu-20.04"]
+ #       qt-version: ["5.15.2", "5.12.8"]
     steps:
       - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
 
@@ -34,20 +35,35 @@ jobs:
         run: |
           cmake --version
 
-      - uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c # v5.0.0
-        with:
-          python-version: '3.9'
+#      - uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c # v5.0.0
+#        with:
+#          python-version: '3.9'
 
-      - name: Install Qt
-        uses: jurplel/install-qt-action@b3ea5275e37b734d027040e2c7fe7a10ea2ef946 # v3.3.0
-        with:
-          version: "${{ matrix.qt-version }}"
-          arch: "gcc_64"
+#      - name: Install Qt
+#        uses: jurplel/install-qt-action@b3ea5275e37b734d027040e2c7fe7a10ea2ef946 # v3.3.0
+#        with:
+#          version: "${{ matrix.qt-version }}"
+#          arch: "gcc_64"
 
       - name: Install DCMTK
         run: sudo apt-get install -y dcmtk
 
+      - name: Install Qt
+        run: |
+          sudo apt-get install -y \
+            qt5-default \
+            qtmultimedia5-dev \
+            qttools5-dev \
+            libqt5xmlpatterns5-dev \
+            libqt5svg5-dev \
+            qtwebengine5-dev \
+            qtscript5-dev \
+            qtbase5-private-dev \
+            libqt5x11extras5-dev \
+            libxt-dev
+
       - name: Install VTK
+        if: matrix.runs-on == 'ubuntu-latest'
         run: |
           sudo apt-get install -y \
             libvtk9-dev \
@@ -58,9 +74,9 @@ jobs:
           cmake \
             -DCTK_QT_VERSION:STRING=5 \
             -DCTK_ENABLE_Widgets:BOOL=ON \
-            -DCTK_USE_SYSTEM_VTK:BOOL=ON \
-            -DCTK_LIB_Visualization/VTK/Widgets:BOOL=ON \
-            -DCTK_LIB_Visualization/VTK/Widgets_USE_TRANSFER_FUNCTION_CHARTS:BOOL=ON \
+            -DCTK_USE_SYSTEM_VTK:BOOL=$CTK_USE_VTK \
+            -DCTK_LIB_Visualization/VTK/Widgets:BOOL=$CTK_USE_VTK \
+            -DCTK_LIB_Visualization/VTK/Widgets_USE_TRANSFER_FUNCTION_CHARTS:BOOL=$CTK_USE_VTK \
             -DCTK_USE_SYSTEM_DCMTK:BOOL=ON \
             -DCTK_APP_ctkDICOM:BOOL=ON \
             -DCTK_LIB_DICOM/Core:BOOL=ON \
@@ -77,6 +93,9 @@ jobs:
             -DCTK_ENABLE_Python_Wrapping:BOOL=ON \
             -B CTK-build \
             -S .
+        env:
+          CTK_USE_VTK: "${{ matrix.runs-on == 'ubuntu-latest' && 'ON' || 'OFF' }}"
+          
 
       - name: Display Qt5_DIR
         run: |