diff --git a/.github/workflows/ctest.yml b/.github/workflows/ctest.yml
index 793b7b4..c33b947 100644
--- a/.github/workflows/ctest.yml
+++ b/.github/workflows/ctest.yml
@@ -16,19 +16,30 @@ jobs:
         uses: jurplel/install-qt-action@v3
         with:
           aqtversion: "==3.1.*"
+          version: "6.8.3"
+          dir: ${{ github.workspace }}/Qt
           host: "linux"
           target: "desktop" # desktop libraries
           tools: "tools_cmake" # Qt tools for cmake
 
+      - name: Set Qt install path
+        id: qtpath
+        run: |
+          QT_DIR=$(find ${{ github.workspace }}/Qt -type d -name "gcc_*" | head -n1)
+          echo "QT_DIR=$QT_DIR" >> $GITHUB_ENV
+          ls -la $QT_DIR
+
       - name: Install CMake
         uses: jwlawson/actions-setup-cmake@v1
 
       - name: Create build directory
         run: mkdir build
 
-        # QT_ROOT_DIR set by install-qt-action
+      - name: check qt install dir
+        run: ls -la ${{ github.workspace }}/Qt
+
       - name: Configure with CMake
-        run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$QT_ROOT_DIR
+        run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$QT_DIR"
 
       - name: Build
         run: cmake --build build --target tests -- -j$(nproc)