diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index 9160242e9..b7debe4ac 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -25,6 +25,10 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libx11-dev
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip