diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index cde09890f..6547455f7 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade meson PyYAML
-          brew install libxml2 doxygen bison ninja
+          brew install libxml2 doxygen bison ninja graphviz
           brew link bison --force
         env:
           HOMEBREW_NO_AUTO_UPDATE: 1