diff --git a/.github/workflows/capgen_unit_tests.yaml b/.github/workflows/capgen_unit_tests.yaml
index 363d19e3..820553af 100644
--- a/.github/workflows/capgen_unit_tests.yaml
+++ b/.github/workflows/capgen_unit_tests.yaml
@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: update repos and install dependencies
-      run: sudo apt-get update && sudo apt-get install -y build-essential ${{matrix.fortran-compiler}} cmake python3 git
+      run: sudo apt-get update && sudo apt-get install -y build-essential ${{matrix.fortran-compiler}} cmake python3 git libxml2-utils
     - name: Run unit tests
       run: cd test && ./run_fortran_tests.sh