diff --git a/.github/workflows/doxygen.yml b/.github/workflows/doxygen.yml
index afd3e48..adbfdec 100644
--- a/.github/workflows/doxygen.yml
+++ b/.github/workflows/doxygen.yml
@@ -32,7 +32,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Install pandoc and doxygen
         run: |
-          sudo apt install pandoc doxygen
+          sudo apt install pandoc doxygen graphviz sphinx-doc
       - name: Setup python
         uses: actions/setup-python@v5
         with: