diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a81dbcb..2f784a79 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,4 +15,5 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: 3.x
+      - run: sudo apt install doxygen
       - run: pip install -r requirements.txt