diff --git a/.github/workflows/test-for-ubuntu.yml b/.github/workflows/test-for-ubuntu.yml
index 345d6ed..7424f10 100644
--- a/.github/workflows/test-for-ubuntu.yml
+++ b/.github/workflows/test-for-ubuntu.yml
@@ -23,7 +23,13 @@ jobs:
     - name: Install dependencies
       run: >
         sudo apt-get update &&
-        sudo apt-get install -y libgtk-4-dev
+        sudo apt-get install -y libgtk-4-dev xvfb
+
+    - name: Start Xvfb
+      run: Xvfb :99 -screen 0 1024x768x24 &
+
+    - name: Set display
+      run: echo "DISPLAY=:99" >> $GITHUB_ENV
 
     - name: Configure CMake
       run: cmake -DCMAKE_C_COMPILER=${{matrix.c_compiler}} -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}