diff --git a/.github/workflows/test-dumogenerator.yml b/.github/workflows/test-dumogenerator.yml
index 85f3679f..47ae2f28 100644
--- a/.github/workflows/test-dumogenerator.yml
+++ b/.github/workflows/test-dumogenerator.yml
@@ -24,6 +24,8 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
+        sudo apt update
+        sudo apt install -y libxml2-dev libxslt-dev # for lxml
         python -m pip install --upgrade pip
         python -m pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi