diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 31be9cd95b2a0823f980b9aa4b5d3ad8c19a4e7f..9e8f1f48b48abd921c01e51f3943df9da70c66fb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,8 +13,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Install Doxygen
+        run: sudo apt install doxygen
 
-      - name: Install dependencies
+      - name: Install Sphinx
         run: pip install sphinx sphinx-rtd-theme
 
       - name: Checkout code