diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index dfc3211..f4bb236 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -46,6 +46,11 @@ jobs:
         xapian-version: [1.4.18]
 
     steps:
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install lcov
+
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with: