diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 437e03d6..c2e11a33 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -25,9 +25,20 @@ jobs:
         git submodule update --init --recursive --depth 1
         git submodule status
         git submodule foreach --recursive 'echo "== $name =="; git remote -v'
-        
+       
+
+    - name: Install Qt5 (Ubuntu)
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y --no-install-recommends \
+          qtbase5-dev qtbase5-dev-tools qt5-qmake \
+          qttools5-dev qttools5-dev-tools \
+          libqt5svg5-dev
+
+
+       
     - name: Configure with CMake (headless)
-      run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DSD_BUILD_DESIGNER=OFF -DSD_BUILD_DEMOS=OFF
+      run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DSD_BUILD_DESIGNER=OFF -DSD_BUILD_DEMOS=OFF -DQt5_DIR=/usr/lib/x86_64-linux-gnu/cmake/Qt5
 
     - name: Build
       run: cmake --build build --config Release --parallel